Package com.sun.jdo.spi.persistence.support.ejb.ejbqlc

Class EJBQLC

java.lang.Object

com.sun.jdo.spi.persistence.support.ejb.ejbqlc.EJBQLC

public class EJBQLC
extends Object

This class is the driver of the EJBQL compiler. It controls the compiler passes: syntax analysis, semantic analysis and generation of the JDOQL query.

A EJBQLC instance is able to compile multiple EJBQL queries as long as they come from the same deployement descriptor. The class uses the model instance passed to the constructor to access any meta data from the deployement descriptor. Method compile(java.lang.String, java.lang.reflect.Method, int, boolean, java.lang.String) compiles a single EJBQL query string together with the java.lang.reflect.Method instance of the corresponding finder/selector method. The result is a JDOQLElements instance, that can be used to construct a JDOQL query instance.

Author:

Michael Bouschen, Shing Wai Chan

Field Summary

Fields

Modifier and Type	Field	Description
protected EJBQLAST	ast	The intermediate form of the EJBQL query string.
protected Model	model	Meta data access.
protected static ResourceBundle	msgs	I18N support.
protected NameMapper	nameMapper	Name mapping EJB <-> JDO.
static String	SIGNATURE	Signature with CVS keyword substitution for identifying the generated code

Constructor Summary

Constructors

Constructor	Description
EJBQLC(Model model, NameMapper nameMapper)	Constructor.

Method Summary

Modifier and Type	Method	Description
JDOQLElements	compile(String ejbqlQuery, Method method, int resultTypeMapping, boolean finderNotSelector, String ejbName)	Compiles the specified query string for the specified finder/selector method.

Methods inherited from class java.lang.Object

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

Field Detail

model

protected Model model

Meta data access.

nameMapper

protected NameMapper nameMapper

Name mapping EJB <-> JDO.

ast

protected EJBQLAST ast

The intermediate form of the EJBQL query string.

msgs

protected static final ResourceBundle msgs

I18N support.

SIGNATURE

public static final String SIGNATURE

Signature with CVS keyword substitution for identifying the generated code

See Also:

Constant Field Values

Constructor Detail

EJBQLC

public EJBQLC(Model model,
              NameMapper nameMapper)

Constructor.

Parameters:

model - meta data access.

nameMapper - name mapping EJB <-> JDO.

Method Detail

compile

public JDOQLElements compile(String ejbqlQuery,
                             Method method,
                             int resultTypeMapping,
                             boolean finderNotSelector,
                             String ejbName)
                      throws EJBQLException

Compiles the specified query string for the specified finder/selector method.

Parameters:

ejbqlQuery - the EJBQL query text

method - the Method instance of the finder or selector

resultTypeMapping - result-type-mapping element from the DD

finderNotSelector - true indicates a finder, false a selector

ejbName - the ejb name of the entity bean

Throws:

EJBQLException