org.openspaces.jpa.openjpa.query.executor
Class JpaJdbcQueryExecutor

java.lang.Object
  org.openspaces.jpa.openjpa.query.executor.JpaJdbcQueryExecutor

All Implemented Interfaces:

JpaQueryExecutor

public class JpaJdbcQueryExecutor
extends Object

Executes JPA's translated expression tree as a JDBC query.

Since:

8.0

Author:

idan

Field Summary

protected org.apache.openjpa.meta.ClassMetaData	_classMetaData
protected org.apache.openjpa.kernel.exps.QueryExpressions	_expression
protected Object[]	_parameters
protected StringBuilder	_sql

Constructor Summary

JpaJdbcQueryExecutor(org.apache.openjpa.kernel.exps.QueryExpressions expression, org.apache.openjpa.meta.ClassMetaData cm, Object[] parameters)

Method Summary

protected void	appendGroupBySql() Append GROUP BY to the SQL string builder.
protected void	appendOrderBySql() Append ORDER BY to the SQL string builder.
protected void	appendSelectFromSql() Append SELECT FROM to SQL string builder.
protected void	appendWhereSql() Append WHERE clause to the SQL string builder.
protected void	build() Build query for execution.
org.apache.openjpa.lib.rop.ResultObjectProvider	execute(StoreManager store) Execute query.
StringBuilder	getSqlBuffer() Gets the executor's generated SQL buffer.

Methods inherited from class java.lang.Object

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

Field Detail

_expression

protected org.apache.openjpa.kernel.exps.QueryExpressions _expression

_classMetaData

protected org.apache.openjpa.meta.ClassMetaData _classMetaData

_parameters

protected Object[] _parameters

_sql

protected StringBuilder _sql

Constructor Detail

JpaJdbcQueryExecutor

public JpaJdbcQueryExecutor(org.apache.openjpa.kernel.exps.QueryExpressions expression,
                            org.apache.openjpa.meta.ClassMetaData cm,
                            Object[] parameters)

Method Detail

execute

public org.apache.openjpa.lib.rop.ResultObjectProvider execute(StoreManager store)
                                                        throws Exception

Execute query.

Specified by:

execute in interface JpaQueryExecutor

Parameters:

store - The store manager.

Returns:

Read entries from space.

Throws:

Exception

build

protected void build()

Build query for execution.

appendWhereSql

protected void appendWhereSql()

Append WHERE clause to the SQL string builder.

appendSelectFromSql

protected void appendSelectFromSql()

Append SELECT FROM to SQL string builder.

appendOrderBySql

protected void appendOrderBySql()

Append ORDER BY to the SQL string builder.

appendGroupBySql

protected void appendGroupBySql()

Append GROUP BY to the SQL string builder.

getSqlBuffer

public StringBuilder getSqlBuffer()

Gets the executor's generated SQL buffer.

Specified by:

getSqlBuffer in interface JpaQueryExecutor