Package net.ontopia.persistence.query.jdo

Class JDONativeValue

java.lang.Object

net.ontopia.persistence.query.jdo.JDONativeValue

All Implemented Interfaces:

JDOValueIF

public class JDONativeValue
extends Object
implements JDOValueIF

INTERNAL: JDOQL value: native value expression. Represents the traversal from a variable to the value returned byte the native expression. Syntax: 'A.{args}'. This might be useful when you know that the root variable refers to a database table and that there are a specific column that you want to get at.

Field Summary

Fields

Modifier and Type	Field	Description
protected String[]	args
protected JDOVariable	root
protected Class	value_type

Fields inherited from interface net.ontopia.persistence.query.jdo.JDOValueIF

COLLECTION, FIELD, FUNCTION, NATIVE_VALUE, NULL, OBJECT, PARAMETER, PRIMITIVE, STRING, VARIABLE

Constructor Summary

Constructors

Constructor	Description
JDONativeValue(JDOVariable root, String[] args, Class value_type)
JDONativeValue(JDOVariable root, String arg, Class value_type)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
String[]	getArguments()
JDOVariable	getRoot()
int	getType()	INTERNAL: Returns the type of JDO value indicated by one of the constants in the JDOValueIF interface.
Class	getValueType()
int	hashCode()
String	toString()
void	visit(JDOVisitorIF visitor)	INTERNAL: Allows the value to be visited.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

root

protected JDOVariable root

args

protected String[] args

value_type

protected Class value_type

Constructor Details

JDONativeValue

public JDONativeValue(JDOVariable root,
 String arg,
 Class value_type)

JDONativeValue

public JDONativeValue(JDOVariable root,
 String[] args,
 Class value_type)

Method Details

getType

public int getType()

Description copied from interface: JDOValueIF

INTERNAL: Returns the type of JDO value indicated by one of the constants in the JDOValueIF interface.

Specified by:

getType in interface JDOValueIF

getRoot

public JDOVariable getRoot()

getArguments

public String[] getArguments()

getValueType

public Class getValueType()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

visit

public void visit(JDOVisitorIF visitor)

Description copied from interface: JDOValueIF

INTERNAL: Allows the value to be visited. This method is used for retrieval of nested data in expressions.

Specified by:

visit in interface JDOValueIF