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zyyang 2021-01-21 17:00:22 +08:00
parent 9a55077b7c
commit 0e987bb9e3
6 changed files with 434 additions and 942 deletions
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60
src/connector/jdbc/src/main/java/App3.java
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@ -1,60 +0,0 @@
import org.apache.commons.dbcp2.BasicDataSource;
import java.sql.*;
public class App3 {
public static void main(String[] args) throws SQLException, ClassNotFoundException {
// 添加数据源1-TDengine,并且作为schema命名为“public”
String url = "jdbc:TAOS://127.0.0.1:6030/hdb";
Class.forName("com.taosdata.jdbc.TSDBDriver");
BasicDataSource dataSource = new BasicDataSource();
dataSource.setUrl(url);
dataSource.setUsername("root");
dataSource.setPassword("taosdata");
// 执行SQL语句，sql语句中表的引用必须用前面设置的schema名称，例如“testdata”就是schema“public“下的表，”datedim“是schema”test“下的表。
String sql = "select cast(s.updates as date ),t.id,t.cmt from public.testdata t , test.datedim s "
+ "where cast(t.uptime as date )=s.updates and t.uptime<'2011-12-01 00:00:00' and t.id>100 limit 100 offset 10 ";
long startTime = System.currentTimeMillis();
Connection conn = dataSource.getConnection();
Statement stmt = conn.createStatement();
// ResultSet rs = stmt.executeQuery(sql);
long rowCount = 0;
String[] types = { "TABLE" };
ResultSet rs = conn.getMetaData().getTables("hdb", null, null, types);
while (rs.next()) {
// if (rowCount < 5) {
for (int j = 0; j < rs.getMetaData().getColumnCount(); j++) {
System.out.print(rs.getMetaData().getColumnName(j + 1) + ": " + rs.getObject(j) + ", ");
}
System.out.println();
// }
rowCount++;
}
rs.close();
System.out.println("\nGET COLUMN:");
rs = conn.getMetaData().getColumns("hdb", null, "sdata", null);
while (rs.next()) {
// if (rowCount < 5) {
ResultSetMetaData meta = rs.getMetaData();
for (int j = 0; j < rs.getMetaData().getColumnCount(); j++) {
if (j != 7) {
System.out.print(rs.getMetaData().getColumnName(j + 1) + ": " + rs.getObject(j) + ", ");
System.out.println();
}
}
System.out.println();
// }
rowCount++;
}
long endTime = System.currentTimeMillis();
System.out.println("execute time:" + (endTime - startTime) + "ms, resultset rows " + rowCount + ", "
+ rowCount * 1000 / (endTime - startTime) + " rows/sec");
rs.close();
stmt.close();
conn.close();
}
}

67
src/connector/jdbc/src/main/java/TdEngineSuperDataGen.java
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@ -1,67 +0,0 @@
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Random;
import org.apache.commons.codec.digest.DigestUtils;
public class TdEngineSuperDataGen {
public static void main(String[] args) throws ClassNotFoundException, SQLException {
Class.forName("com.taosdata.jdbc.TSDBDriver");
String url = "jdbc:TAOS://127.0.0.1:6030/test?user=root&password=taosdata";
Connection conn = DriverManager.getConnection(url);
Statement stmt = conn.createStatement();
// create database
stmt.executeUpdate("create database if not exists hdb");
// use database
stmt.executeUpdate("use hdb");
stmt.executeUpdate("drop table if exists sdata");
// create table
stmt.executeUpdate(
"create table if not exists sdata (uptime timestamp, id int, x int , y int ,cmt binary(100)) tags(location nchar(100),tname nchar(100))");
ZoneId zoneId = ZoneId.systemDefault();
Map<String, String> table = new HashMap<>();
table.put("dt001", "beijing");
table.put("dt002", "shanghai");
table.put("dt003", "chongqing");
table.put("dt004", "xian");
for (Entry<String, String> kv : table.entrySet()) {
LocalDateTime d = LocalDateTime.now().minusMonths(2);
long rowCount = LocalDateTime.now().atZone(zoneId).toEpochSecond() - d.atZone(zoneId).toEpochSecond();
Random r = new Random();
StringBuilder sb = null;
long startTime = System.currentTimeMillis();
try {
for (long i = 0; i < rowCount; i++) {
sb = new StringBuilder("insert into " + kv.getKey() + " using sdata tags(" + kv.getValue() + "," + kv.getKey() + ") values('");
d = d.plusSeconds(1);
sb.append(d.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.MS")));
sb.append("'," + i + "," + r.nextInt(100) + "," + r.nextInt(100) + ",'");
sb.append(DigestUtils.md5Hex(d.toString()));
sb.append("')");
System.out.println("SQL >>> " + sb.toString());
stmt.executeUpdate(sb.toString());
}
} catch (SQLException e) {
System.out.println(d);
System.out.println(sb.toString());
e.printStackTrace();
}
long endTime = System.currentTimeMillis();
System.out.println("generate data execute time:" + (endTime - startTime) + "ms, resultset rows " + rowCount
+ ", " + rowCount * 1000 / (endTime - startTime) + " rows/sec");
}
stmt.close();
conn.close();
}
}

390
src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java
View File

@ -495,6 +495,102 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData, Wrap
public abstract ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types) throws SQLException;
protected ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types, Connection connection) throws SQLException {
try (Statement stmt = connection.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(2);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(3);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(4);
col4.setColName("TABLE_TYPE");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(5);
col5.setColName("REMARKS");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col5);
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(6);
col6.setColName("TYPE_CAT");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
ColumnMetaData col7 = new ColumnMetaData();
col7.setColIndex(7);
col7.setColName("TYPE_SCHEM");
col7.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col7);
ColumnMetaData col8 = new ColumnMetaData();
col8.setColIndex(8);
col8.setColName("TYPE_NAME");
col8.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col8);
ColumnMetaData col9 = new ColumnMetaData();
col9.setColIndex(9);
col9.setColName("SELF_REFERENCING_COL_NAME");
col9.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col9);
ColumnMetaData col10 = new ColumnMetaData();
col10.setColIndex(10);
col10.setColName("REF_GENERATION");
col10.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col10);
resultSet.setColumnMetaDataList(columnMetaDataList);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet tables = stmt.executeQuery("show tables");
while (tables.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(10);
rowData.setString(0, dbname);
rowData.setString(2, tables.getString("table_name"));
rowData.setString(3, "TABLE");
rowData.setString(4, "");
rowDataList.add(rowData);
}
ResultSet stables = stmt.executeQuery("show stables");
while (stables.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(10);
rowData.setString(0, dbname);
rowData.setString(2, stables.getString("name"));
rowData.setString(3, "TABLE");
rowData.setString(4, "STABLE");
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
}
public ResultSet getSchemas() throws SQLException {
return getEmptyResultSet();
}
@ -803,4 +899,298 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData, Wrap
public boolean isWrapperFor(Class<?> iface) throws SQLException {
return iface.isInstance(this);
}
protected ResultSet getCatalogs(Connection conn) throws SQLException {
try (Statement stmt = conn.createStatement()) {
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
resultSet.setColumnMetaDataList(columnMetaDataList);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet rs = stmt.executeQuery("show databases");
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(1);
rowData.setString(0, rs.getString("name"));
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
}
protected ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern, Connection conn) {
try (Statement stmt = conn.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>(24);
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(2);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(3);
col3.setColName("TABLE_NAME");
col3.setColSize(193);
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// COLUMN_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(4);
col4.setColName("COLUMN_NAME");
col4.setColSize(65);
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
// DATA_TYPE
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(5);
col5.setColName("DATA_TYPE");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col5);
// TYPE_NAME
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(6);
col6.setColName("TYPE_NAME");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
// COLUMN_SIZE
ColumnMetaData col7 = new ColumnMetaData();
col7.setColIndex(7);
col7.setColName("COLUMN_SIZE");
col7.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col7);
// BUFFER_LENGTH ,not used
columnMetaDataList.add(null);
// DECIMAL_DIGITS
ColumnMetaData col9 = new ColumnMetaData();
col9.setColIndex(9);
col9.setColName("DECIMAL_DIGITS");
col9.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col9);
// add NUM_PREC_RADIX
ColumnMetaData col10 = new ColumnMetaData();
col10.setColIndex(10);
col10.setColName("NUM_PREC_RADIX");
col10.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col10);
// NULLABLE
ColumnMetaData col11 = new ColumnMetaData();
col11.setColIndex(11);
col11.setColName("NULLABLE");
col11.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col11);
// REMARKS
ColumnMetaData col12 = new ColumnMetaData();
col12.setColIndex(12);
col12.setColName("REMARKS");
col12.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col12);
resultSet.setColumnMetaDataList(columnMetaDataList);
// set up rowDataList
ResultSet rs = stmt.executeQuery("describe " + dbname + "." + tableNamePattern);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
int index = 0;
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(24);
// set TABLE_CAT
rowData.setString(0, dbname);
// set TABLE_NAME
rowData.setString(2, tableNamePattern);
// set COLUMN_NAME
rowData.setString(3, rs.getString("Field"));
// set DATA_TYPE
String typeName = rs.getString("Type");
rowData.setInt(4, getDataType(typeName));
// set TYPE_NAME
rowData.setString(5, typeName);
// set COLUMN_SIZE
int length = rs.getInt("Length");
rowData.setInt(6, getColumnSize(typeName, length));
// set DECIMAL_DIGITS
rowData.setInt(8, getDecimalDigits(typeName));
// set NUM_PREC_RADIX
rowData.setInt(9, 10);
// set NULLABLE
rowData.setInt(10, getNullable(index, typeName));
// set REMARKS
rowData.setString(11, rs.getString("Note"));
rowDataList.add(rowData);
index++;
}
resultSet.setRowDataList(rowDataList);
return resultSet;
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
protected ResultSet getPrimaryKeys(String catalog, String schema, String table, Connection conn) throws SQLException {
try (Statement stmt = conn.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(0);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(1);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(2);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// COLUMN_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(3);
col4.setColName("COLUMN_NAME");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
// KEY_SEQ
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(4);
col5.setColName("KEY_SEQ");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col5);
// PK_NAME
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(5);
col6.setColName("PK_NAME");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
resultSet.setColumnMetaDataList(columnMetaDataList);
// set rowData
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet rs = stmt.executeQuery("describe " + dbname + "." + table);
rs.next();
TSDBResultSetRowData rowData = new TSDBResultSetRowData(6);
rowData.setString(0, null);
rowData.setString(1, null);
rowData.setString(2, table);
String pkName = rs.getString(1);
rowData.setString(3, pkName);
rowData.setInt(4, 1);
rowData.setString(5, pkName);
rowDataList.add(rowData);
resultSet.setRowDataList(rowDataList);
return resultSet;
}
}
protected ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern, Connection conn) throws SQLException {
try (Statement stmt = conn.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(0);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(1);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(2);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// SUPERTABLE_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(3);
col4.setColName("SUPERTABLE_NAME");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
resultSet.setColumnMetaDataList(columnMetaDataList);
ResultSet rs = stmt.executeQuery("show tables like '" + tableNamePattern + "'");
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(4);
rowData.setString(2, rs.getString(1));
rowData.setString(3, rs.getString(4));
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
}
}

56
src/connector/jdbc/src/main/java/com/taosdata/jdbc/ColumnMetaData.java
View File

@ -16,40 +16,40 @@ package com.taosdata.jdbc;
public class ColumnMetaData {
private int colType = 0;
private String colName = null;
private int colSize = -1;
private int colIndex = 0;
private int colType = 0;
private String colName = null;
private int colSize = -1;
private int colIndex = 0;
public int getColSize() {
return colSize;
}
public int getColSize() {
return colSize;
}
public void setColSize(int colSize) {
this.colSize = colSize;
}
public void setColSize(int colSize) {
this.colSize = colSize;
}
public int getColType() {
return colType;
}
public int getColType() {
return colType;
}
public void setColType(int colType) {
this.colType = colType;
}
public void setColType(int colType) {
this.colType = colType;
}
public String getColName() {
return colName;
}
public String getColName() {
return colName;
}
public void setColName(String colName) {
this.colName = colName;
}
public void setColName(String colName) {
this.colName = colName;
}
public int getColIndex() {
return colIndex;
}
public int getColIndex() {
return colIndex;
}
public void setColIndex(int colIndex) {
this.colIndex = colIndex;
}
public void setColIndex(int colIndex) {
this.colIndex = colIndex;
}
}

419
src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDatabaseMetaData.java
View File

@ -14,9 +14,9 @@
*****************************************************************************/
package com.taosdata.jdbc;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
public class TSDBDatabaseMetaData extends AbstractDatabaseMetaData {
@ -59,435 +59,38 @@ public class TSDBDatabaseMetaData extends AbstractDatabaseMetaData {
if (conn == null || conn.isClosed()) {
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
}
try (Statement stmt = conn.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(2);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(3);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(4);
col4.setColName("TABLE_TYPE");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(5);
col5.setColName("REMARKS");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col5);
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(6);
col6.setColName("TYPE_CAT");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
ColumnMetaData col7 = new ColumnMetaData();
col7.setColIndex(7);
col7.setColName("TYPE_SCHEM");
col7.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col7);
ColumnMetaData col8 = new ColumnMetaData();
col8.setColIndex(8);
col8.setColName("TYPE_NAME");
col8.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col8);
ColumnMetaData col9 = new ColumnMetaData();
col9.setColIndex(9);
col9.setColName("SELF_REFERENCING_COL_NAME");
col9.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col9);
ColumnMetaData col10 = new ColumnMetaData();
col10.setColIndex(10);
col10.setColName("REF_GENERATION");
col10.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col10);
resultSet.setColumnMetaDataList(columnMetaDataList);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet tables = stmt.executeQuery("show tables");
while (tables.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(10);
rowData.setString(0, dbname);
rowData.setString(2, tables.getString("table_name"));
rowData.setString(3, "TABLE");
rowData.setString(4, "");
rowDataList.add(rowData);
}
ResultSet stables = stmt.executeQuery("show stables");
while (stables.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(10);
rowData.setString(0, dbname);
rowData.setString(2, stables.getString("name"));
rowData.setString(3, "TABLE");
rowData.setString(4, "STABLE");
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
return super.getTables(catalog, schemaPattern, tableNamePattern, types, conn);
}
public ResultSet getCatalogs() throws SQLException {
if (conn == null || conn.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = conn.createStatement()) {
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>(24);
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
resultSet.setColumnMetaDataList(columnMetaDataList);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet rs = stmt.executeQuery("show databases");
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(1);
rowData.setString(0, rs.getString("name"));
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
return super.getCatalogs(conn);
}
public ResultSet getTableTypes() throws SQLException {
if (conn == null || conn.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
ColumnMetaData colMetaData = new ColumnMetaData();
colMetaData.setColIndex(0);
colMetaData.setColName("TABLE_TYPE");
colMetaData.setColSize(10);
colMetaData.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(colMetaData);
resultSet.setColumnMetaDataList(columnMetaDataList);
// set up rowDataList
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
TSDBResultSetRowData rowData = new TSDBResultSetRowData(1);
rowData.setString(0, "TABLE");
rowDataList.add(rowData);
rowData = new TSDBResultSetRowData(1);
rowData.setString(0, "STABLE");
rowDataList.add(rowData);
resultSet.setRowDataList(rowDataList);
return resultSet;
return super.getTableTypes();
}
public ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
if (conn == null || conn.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = conn.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>(24);
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(2);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(3);
col3.setColName("TABLE_NAME");
col3.setColSize(193);
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// COLUMN_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(4);
col4.setColName("COLUMN_NAME");
col4.setColSize(65);
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
// DATA_TYPE
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(5);
col5.setColName("DATA_TYPE");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col5);
// TYPE_NAME
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(6);
col6.setColName("TYPE_NAME");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
// COLUMN_SIZE
ColumnMetaData col7 = new ColumnMetaData();
col7.setColIndex(7);
col7.setColName("COLUMN_SIZE");
col7.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col7);
// BUFFER_LENGTH ,not used
columnMetaDataList.add(null);
// DECIMAL_DIGITS
ColumnMetaData col9 = new ColumnMetaData();
col9.setColIndex(9);
col9.setColName("DECIMAL_DIGITS");
col9.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col9);
// add NUM_PREC_RADIX
ColumnMetaData col10 = new ColumnMetaData();
col10.setColIndex(10);
col10.setColName("NUM_PREC_RADIX");
col10.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col10);
// NULLABLE
ColumnMetaData col11 = new ColumnMetaData();
col11.setColIndex(11);
col11.setColName("NULLABLE");
col11.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col11);
// REMARKS
ColumnMetaData col12 = new ColumnMetaData();
col12.setColIndex(12);
col12.setColName("REMARKS");
col12.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col12);
resultSet.setColumnMetaDataList(columnMetaDataList);
// set up rowDataList
ResultSet rs = stmt.executeQuery("describe " + dbname + "." + tableNamePattern);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
int index = 0;
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(24);
// set TABLE_CAT
rowData.setString(0, dbname);
// set TABLE_NAME
rowData.setString(2, tableNamePattern);
// set COLUMN_NAME
rowData.setString(3, rs.getString("Field"));
// set DATA_TYPE
String typeName = rs.getString("Type");
rowData.setInt(4, getDataType(typeName));
// set TYPE_NAME
rowData.setString(5, typeName);
// set COLUMN_SIZE
int length = rs.getInt("Length");
rowData.setInt(6, getColumnSize(typeName, length));
// set DECIMAL_DIGITS
rowData.setInt(8, getDecimalDigits(typeName));
// set NUM_PREC_RADIX
rowData.setInt(9, 10);
// set NULLABLE
rowData.setInt(10, getNullable(index, typeName));
// set REMARKS
rowData.setString(11, rs.getString("Note"));
rowDataList.add(rowData);
index++;
}
resultSet.setRowDataList(rowDataList);
return resultSet;
} catch (SQLException e) {
e.printStackTrace();
}
return null;
return super.getColumns(catalog, schemaPattern, tableNamePattern, columnNamePattern, conn);
}
public ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException {
if (conn == null || conn.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = conn.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(0);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(1);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(2);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// COLUMN_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(3);
col4.setColName("COLUMN_NAME");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
// KEY_SEQ
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(4);
col5.setColName("KEY_SEQ");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col5);
// PK_NAME
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(5);
col6.setColName("PK_NAME");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
resultSet.setColumnMetaDataList(columnMetaDataList);
// set rowData
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet rs = stmt.executeQuery("describe " + dbname + "." + table);
rs.next();
TSDBResultSetRowData rowData = new TSDBResultSetRowData(6);
rowData.setString(0, null);
rowData.setString(1, null);
rowData.setString(2, table);
String pkName = rs.getString(1);
rowData.setString(3, pkName);
rowData.setInt(4, 1);
rowData.setString(5, pkName);
rowDataList.add(rowData);
resultSet.setRowDataList(rowDataList);
return resultSet;
}
return super.getPrimaryKeys(catalog, schema, table, conn);
}
public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws
SQLException {
public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
if (conn == null || conn.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = conn.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(0);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(1);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(2);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// SUPERTABLE_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(3);
col4.setColName("SUPERTABLE_NAME");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
resultSet.setColumnMetaDataList(columnMetaDataList);
ResultSet rs = stmt.executeQuery("show tables like '" + tableNamePattern + "'");
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(4);
rowData.setString(2, rs.getString(1));
rowData.setString(3, rs.getString(4));
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
return super.getSuperTables(catalog, schemaPattern, tableNamePattern, conn);
}
}

384
src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDatabaseMetaData.java
View File

@ -38,409 +38,35 @@ public class RestfulDatabaseMetaData extends AbstractDatabaseMetaData {
if (connection == null || connection.isClosed()) {
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
}
try (Statement stmt = connection.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(2);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(3);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(4);
col4.setColName("TABLE_TYPE");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(5);
col5.setColName("REMARKS");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col5);
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(6);
col6.setColName("TYPE_CAT");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
ColumnMetaData col7 = new ColumnMetaData();
col7.setColIndex(7);
col7.setColName("TYPE_SCHEM");
col7.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col7);
ColumnMetaData col8 = new ColumnMetaData();
col8.setColIndex(8);
col8.setColName("TYPE_NAME");
col8.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col8);
ColumnMetaData col9 = new ColumnMetaData();
col9.setColIndex(9);
col9.setColName("SELF_REFERENCING_COL_NAME");
col9.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col9);
ColumnMetaData col10 = new ColumnMetaData();
col10.setColIndex(10);
col10.setColName("REF_GENERATION");
col10.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col10);
resultSet.setColumnMetaDataList(columnMetaDataList);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet tables = stmt.executeQuery("show tables");
while (tables.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(10);
rowData.setString(0, dbname);
rowData.setString(2, tables.getString("table_name"));
rowData.setString(3, "TABLE");
rowData.setString(4, "");
rowDataList.add(rowData);
}
ResultSet stables = stmt.executeQuery("show stables");
while (stables.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(10);
rowData.setString(0, dbname);
rowData.setString(2, stables.getString("name"));
rowData.setString(3, "TABLE");
rowData.setString(4, "STABLE");
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
return super.getTables(catalog, schemaPattern, tableNamePattern, types, connection);
}
@Override
public ResultSet getCatalogs() throws SQLException {
if (connection == null || connection.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = connection.createStatement()) {
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>(24);
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
resultSet.setColumnMetaDataList(columnMetaDataList);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet rs = stmt.executeQuery("show databases");
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(1);
rowData.setString(0, rs.getString("name"));
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
return super.getCatalogs(connection);
}
@Override
public ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
if (connection == null || connection.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = connection.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>(24);
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(1);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(2);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(3);
col3.setColName("TABLE_NAME");
col3.setColSize(193);
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// COLUMN_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(4);
col4.setColName("COLUMN_NAME");
col4.setColSize(65);
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
// DATA_TYPE
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(5);
col5.setColName("DATA_TYPE");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col5);
// TYPE_NAME
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(6);
col6.setColName("TYPE_NAME");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
// COLUMN_SIZE
ColumnMetaData col7 = new ColumnMetaData();
col7.setColIndex(7);
col7.setColName("COLUMN_SIZE");
col7.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col7);
// BUFFER_LENGTH ,not used
columnMetaDataList.add(null);
// DECIMAL_DIGITS
ColumnMetaData col9 = new ColumnMetaData();
col9.setColIndex(9);
col9.setColName("DECIMAL_DIGITS");
col9.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col9);
// add NUM_PREC_RADIX
ColumnMetaData col10 = new ColumnMetaData();
col10.setColIndex(10);
col10.setColName("NUM_PREC_RADIX");
col10.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col10);
// NULLABLE
ColumnMetaData col11 = new ColumnMetaData();
col11.setColIndex(11);
col11.setColName("NULLABLE");
col11.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col11);
// REMARKS
ColumnMetaData col12 = new ColumnMetaData();
col12.setColIndex(12);
col12.setColName("REMARKS");
col12.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col12);
resultSet.setColumnMetaDataList(columnMetaDataList);
// set up rowDataList
ResultSet rs = stmt.executeQuery("describe " + dbname + "." + tableNamePattern);
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
int index = 0;
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(24);
// set TABLE_CAT
rowData.setString(0, dbname);
// set TABLE_NAME
rowData.setString(2, tableNamePattern);
// set COLUMN_NAME
rowData.setString(3, rs.getString("Field"));
// set DATA_TYPE
String typeName = rs.getString("Type");
rowData.setInt(4, getDataType(typeName));
// set TYPE_NAME
rowData.setString(5, typeName);
// set COLUMN_SIZE
int length = rs.getInt("Length");
rowData.setInt(6, getColumnSize(typeName, length));
// set DECIMAL_DIGITS
rowData.setInt(8, getDecimalDigits(typeName));
// set NUM_PREC_RADIX
rowData.setInt(9, 10);
// set NULLABLE
rowData.setInt(10, getNullable(index, typeName));
// set REMARKS
rowData.setString(11, rs.getString("Note"));
rowDataList.add(rowData);
index++;
}
resultSet.setRowDataList(rowDataList);
return resultSet;
} catch (SQLException e) {
e.printStackTrace();
}
return null;
return super.getColumns(catalog, schemaPattern, tableNamePattern, columnNamePattern, connection);
}
@Override
public ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException {
if (connection == null || connection.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = connection.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(0);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(1);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(2);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// COLUMN_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(3);
col4.setColName("COLUMN_NAME");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
// KEY_SEQ
ColumnMetaData col5 = new ColumnMetaData();
col5.setColIndex(4);
col5.setColName("KEY_SEQ");
col5.setColType(TSDBConstants.TSDB_DATA_TYPE_INT);
columnMetaDataList.add(col5);
// PK_NAME
ColumnMetaData col6 = new ColumnMetaData();
col6.setColIndex(5);
col6.setColName("PK_NAME");
col6.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col6);
resultSet.setColumnMetaDataList(columnMetaDataList);
// set rowData
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
ResultSet rs = stmt.executeQuery("describe " + dbname + "." + table);
rs.next();
TSDBResultSetRowData rowData = new TSDBResultSetRowData(6);
rowData.setString(0, null);
rowData.setString(1, null);
rowData.setString(2, table);
String pkName = rs.getString(1);
rowData.setString(3, pkName);
rowData.setInt(4, 1);
rowData.setString(5, pkName);
rowDataList.add(rowData);
resultSet.setRowDataList(rowDataList);
return resultSet;
}
return super.getPrimaryKeys(catalog, schema, table, connection);
}
@Override
public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
if (connection == null || connection.isClosed())
throw new SQLException(TSDBConstants.FixErrMsg(TSDBConstants.JNI_CONNECTION_NULL));
try (Statement stmt = connection.createStatement()) {
if (catalog == null || catalog.isEmpty())
return null;
ResultSet databases = stmt.executeQuery("show databases");
String dbname = null;
while (databases.next()) {
dbname = databases.getString("name");
if (dbname.equalsIgnoreCase(catalog))
break;
}
databases.close();
if (dbname == null)
return null;
stmt.execute("use " + dbname);
DatabaseMetaDataResultSet resultSet = new DatabaseMetaDataResultSet();
// set up ColumnMetaDataList
List<ColumnMetaData> columnMetaDataList = new ArrayList<>();
// TABLE_CAT
ColumnMetaData col1 = new ColumnMetaData();
col1.setColIndex(0);
col1.setColName("TABLE_CAT");
col1.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col1);
// TABLE_SCHEM
ColumnMetaData col2 = new ColumnMetaData();
col2.setColIndex(1);
col2.setColName("TABLE_SCHEM");
col2.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col2);
// TABLE_NAME
ColumnMetaData col3 = new ColumnMetaData();
col3.setColIndex(2);
col3.setColName("TABLE_NAME");
col3.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col3);
// SUPERTABLE_NAME
ColumnMetaData col4 = new ColumnMetaData();
col4.setColIndex(3);
col4.setColName("SUPERTABLE_NAME");
col4.setColType(TSDBConstants.TSDB_DATA_TYPE_NCHAR);
columnMetaDataList.add(col4);
resultSet.setColumnMetaDataList(columnMetaDataList);
ResultSet rs = stmt.executeQuery("show tables like '" + tableNamePattern + "'");
List<TSDBResultSetRowData> rowDataList = new ArrayList<>();
while (rs.next()) {
TSDBResultSetRowData rowData = new TSDBResultSetRowData(4);
rowData.setString(2, rs.getString(1));
rowData.setString(3, rs.getString(4));
rowDataList.add(rowData);
}
resultSet.setRowDataList(rowDataList);
return resultSet;
}
return super.getSuperTables(catalog, schemaPattern, tableNamePattern, connection);
}
}