org.datanucleus.query

Class JDOQLQueryHelper

java.lang.Object

org.datanucleus.query.JDOQLQueryHelper

public class JDOQLQueryHelper
extends Object

JDOQL query helper class providing key information about the language etc.

Constructor Summary

Constructors

Constructor and Description
JDOQLQueryHelper()

Method Summary

Methods

Modifier and Type	Method and Description
static String	getJDOQLForExpression(Expression expr)
static boolean	isKeyword(String name) Convenience method returning if the supplied name is a keyword for this query language.
static boolean	isKeywordExtended(String name) Convenience method returning if the supplied name is a keyword for this query language, allowing the DataNucleus extension keywords (UPDATE, DELETE, SET).
static boolean	isValidJavaIdentifierForJDOQL(String s) Utility to check if a name is a valid Java identifier.

Methods inherited from class java.lang.Object

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

Constructor Detail

JDOQLQueryHelper

public JDOQLQueryHelper()

Method Detail

isKeyword

public static boolean isKeyword(String name)

Convenience method returning if the supplied name is a keyword for this query language.

Parameters:

name - Name to check

Returns:

Whether it is a keyword

isKeywordExtended

public static boolean isKeywordExtended(String name)

Convenience method returning if the supplied name is a keyword for this query language, allowing the DataNucleus extension keywords (UPDATE, DELETE, SET).

Parameters:

name - Name to check

Returns:

Whether it is a keyword

isValidJavaIdentifierForJDOQL

public static boolean isValidJavaIdentifierForJDOQL(String s)

Utility to check if a name is a valid Java identifier. Used by JDOQL in validating the names of parameters/variables.

Parameters:

s - The name

Returns:

Whether it is a valid identifier in Java.

getJDOQLForExpression

public static String getJDOQLForExpression(Expression expr)