org.datanucleus.query.compiler

Class JPQLSymbolResolver

java.lang.Object

org.datanucleus.query.compiler.AbstractSymbolResolver

org.datanucleus.query.compiler.JPQLSymbolResolver

All Implemented Interfaces:

SymbolResolver

public class JPQLSymbolResolver
extends AbstractSymbolResolver

Symbol resolver for JPQL.

Field Summary

Fields inherited from class org.datanucleus.query.compiler.AbstractSymbolResolver

candidateAlias, candidateClass, clr, metaDataManager, symtbl

Constructor Summary

Constructors

Constructor and Description
JPQLSymbolResolver(MetaDataManager mmgr, ClassLoaderResolver clr, SymbolTable symtbl, Class cls, String alias) Constructor for symbol resolver.

Method Summary

Modifier and Type	Method and Description
boolean	caseSensitiveSymbolNames() Whether names of symbols are case-sensitive (e.g JDOQL returns true, but JPQL returns false).
Class	resolveClass(String className) Method to perform a lookup of the class name from the input name.
boolean	supportsImplicitVariables() Whether we should accept implicit variables in the query.

Methods inherited from class org.datanucleus.query.compiler.AbstractSymbolResolver

getPrimaryClass, getType

Methods inherited from class java.lang.Object

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

Constructor Detail

JPQLSymbolResolver

public JPQLSymbolResolver(MetaDataManager mmgr,
                          ClassLoaderResolver clr,
                          SymbolTable symtbl,
                          Class cls,
                          String alias)

Constructor for symbol resolver.

Parameters:

mmgr - MetaData manager

clr - ClassLoader resolver

symtbl - Symbol table

cls - Candidate class

alias - Candidate alias

Method Detail

resolveClass

public Class resolveClass(String className)

Method to perform a lookup of the class name from the input name. Makes use of the lookup via "entity name".

Parameters:

className - Name of the class

Returns:

The class corresponding to this name

Throws:

ClassNotResolvedException - thrown if not resolvable using entity name

caseSensitiveSymbolNames

public boolean caseSensitiveSymbolNames()

Description copied from interface: SymbolResolver

Whether names of symbols are case-sensitive (e.g JDOQL returns true, but JPQL returns false).

Returns:

Whether case sensitive

supportsImplicitVariables

public boolean supportsImplicitVariables()

Description copied from interface: SymbolResolver

Whether we should accept implicit variables in the query. JDOQL supports variables, yet JPQL doesn't. Also in JDOQL if the user supplies some explicit variables then it doesn't allow implicit variables.

Returns:

Whether to support implicit variables