Package org.apache.openjpa.kernel.jpql

Class JPQLParser

java.lang.Object

org.apache.openjpa.kernel.jpql.JPQLParser

All Implemented Interfaces:

Serializable, ExpressionParser

public class JPQLParser
extends Object
implements ExpressionParser

Parser for JPQL queries.

Author:

Marc Prud'hommeaux

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final String	LANG_JPQL

Constructor Summary

Constructors

Constructor	Description
JPQLParser()

Method Summary

Modifier and Type	Method	Description
QueryExpressions	eval(Object parsed, ExpressionStoreQuery query, ExpressionFactory factory, ClassMetaData candidate)	Parse the given query string.
Value[]	eval(String[] vals, ExpressionStoreQuery query, ExpressionFactory factory, ClassMetaData candidate)	Parse the given value clauses.
String	getLanguage()	Return a string key describing the language that this instance parses.
Object	parse(String ql, ExpressionStoreQuery query)	Return a parsed intermediate form of the given query string.
void	populate(Object parsed, ExpressionStoreQuery query)	Use the parsed query form to set information such as candidate type, result type, etc that was encoded in the query string.

Methods inherited from class java.lang.Object

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

Field Details

LANG_JPQL

public static final String LANG_JPQL

See Also:

• Constant Field Values

Constructor Details

JPQLParser

public JPQLParser()

Method Details

parse

public Object parse(String ql,
 ExpressionStoreQuery query)

Description copied from interface: ExpressionParser

Return a parsed intermediate form of the given query string.

Specified by:

parse in interface ExpressionParser

populate

public void populate(Object parsed,
 ExpressionStoreQuery query)

Description copied from interface: ExpressionParser

Use the parsed query form to set information such as candidate type, result type, etc that was encoded in the query string.

Specified by:

populate in interface ExpressionParser

eval

public QueryExpressions eval(Object parsed,
 ExpressionStoreQuery query,
 ExpressionFactory factory,
 ClassMetaData candidate)

Description copied from interface: ExpressionParser

Parse the given query string.

Specified by:

eval in interface ExpressionParser

eval

public Value[] eval(String[] vals,
 ExpressionStoreQuery query,
 ExpressionFactory factory,
 ClassMetaData candidate)

Description copied from interface: ExpressionParser

Parse the given value clauses.

Specified by:

eval in interface ExpressionParser

getLanguage

public String getLanguage()

Description copied from interface: ExpressionParser

Return a string key describing the language that this instance parses.

Specified by:

getLanguage in interface ExpressionParser