com.qubole.quark.plugins.jdbc

Class JdbcDB

java.lang.Object

com.qubole.quark.plugins.jdbc.JdbcDB

All Implemented Interfaces:

DataSource, Executor

Direct Known Subclasses:

GenericDb, H2Db, HiveDb, MysqlDb, OracleDb, RedShiftDb

public abstract class JdbcDB
extends Object
implements Executor

Contains common functions for all Data sources that support JDBC.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	password
protected String	url
protected String	user

Method Summary

Modifier and Type	Method and Description
void	cleanup() Cleans up the JDBC resource without waiting for the Garbage Collection
Iterator<Object>	execute(Connection conn, String sql)
Iterator<Object>	executeQuery(String sql)
protected abstract String	getCatalogSql()
abstract Connection	getConnection()
com.google.common.collect.ImmutableMap<String,org.apache.calcite.schema.Schema>	getSchemas()
protected com.google.common.collect.ImmutableMap<String,Integer>	getTypes(Connection connection)
boolean	isCaseSensitive()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.qubole.quark.plugin.DataSource

getDefaultSchema, getProductName, getSqlDialect

Field Detail

url

protected final String url

user

protected final String user

password

protected final String password

Method Detail

getConnection

public abstract Connection getConnection()
                                  throws ClassNotFoundException,
                                         SQLException

Throws:

ClassNotFoundException

SQLException

getCatalogSql

protected abstract String getCatalogSql()

getSchemas

public com.google.common.collect.ImmutableMap<String,org.apache.calcite.schema.Schema> getSchemas()
                                                                                           throws QuarkException

Specified by:

getSchemas in interface DataSource

Throws:

QuarkException

getTypes

protected com.google.common.collect.ImmutableMap<String,Integer> getTypes(Connection connection)
                                                                   throws SQLException

Throws:

SQLException

executeQuery

public Iterator<Object> executeQuery(String sql)
                              throws Exception

Specified by:

executeQuery in interface Executor

Throws:

Exception

execute

public Iterator<Object> execute(Connection conn,
                                String sql)
                         throws Exception

Throws:

Exception

cleanup

public void cleanup()
             throws SQLException

Cleans up the JDBC resource without waiting for the Garbage Collection

Specified by:

cleanup in interface Executor

Throws:

SQLException

isCaseSensitive

public boolean isCaseSensitive()

Specified by:

isCaseSensitive in interface DataSource