oracle.pg.rdbms.pgql

Class PgqlConnection

java.lang.Object

oracle.pg.rdbms.pgql.PgqlConnection

public class PgqlConnection
extends java.lang.Object

This is a class used to create PgqlStatement and PgqlPreparedStatement objects for executing PGQL queries against graphs stored in Oracle Database.

Method Summary

Modifier and Type	Method and Description
PgqlStatement	createStatement() Creates a new PgqlStatement object, which is used to execute PGQL queries
static PgqlConnection	getConnection(java.sql.Connection conn) Factory method to get PgqlConnection instance.
java.lang.String	getGraph() Get the graph name on which PGQL queries will be executed for this connection.
java.sql.Connection	getJdbcConnection() Get the JDBC connection that is used to execute PGQL queries
java.lang.String	getSchema() Get the schema name that will be used to execute PGQL queries with this connection.
PgqlPreparedStatement	prepareStatement(java.lang.String pgql) Creates a new PgqlPreparedStatement object, which represents a pre-compiled PGQL statement.
void	setGraph(java.lang.String graph) Sets the graph name on which PGQL queries will be executed for this connection.
void	setSchema(java.lang.String schema) Sets the schema name that will be used to execute PGQL queries with this connection.

Methods inherited from class java.lang.Object

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

Method Detail

createStatement

public PgqlStatement createStatement()

Creates a new PgqlStatement object, which is used to execute PGQL queries

Returns:

a new PgqlStatement object that can be used to perform PGQL queries

getConnection

public static PgqlConnection getConnection(java.sql.Connection conn)

Factory method to get PgqlConnection instance.

Parameters:

conn - a JDBC connection

Returns:

a PgqlConnection instance

getGraph

public java.lang.String getGraph()

Get the graph name on which PGQL queries will be executed for this connection.

Returns:

the graph name for this connection

getJdbcConnection

public java.sql.Connection getJdbcConnection()

Get the JDBC connection that is used to execute PGQL queries

Returns:

the connection

getSchema

public java.lang.String getSchema()
                           throws PgqlToSqlException

Get the schema name that will be used to execute PGQL queries with this connection. If the schema has not been set, the schema from JDBC connection is returned.

Returns:

the schema set for this connection

Throws:

PgqlToSqlException - if a database access error occurs or this method is called on a closed connection

prepareStatement

public PgqlPreparedStatement prepareStatement(java.lang.String pgql)

Creates a new PgqlPreparedStatement object, which represents a pre-compiled PGQL statement.

Parameters:

pgql - the PGQL query to compile

Returns:

a new PgqlPreparedStatement object that can be used to efficiently execute the same query multiple times

setGraph

public void setGraph(java.lang.String graph)

Sets the graph name on which PGQL queries will be executed for this connection.

Parameters:

graph - the name of the graph

setSchema

public void setSchema(java.lang.String schema)

Sets the schema name that will be used to execute PGQL queries with this connection.

Parameters:

schema - the name of the schema