com.solarmetric.rd.kodo.query.exp
Class UnboundVariable

java.lang.Object
  |
  +--com.solarmetric.rd.kodo.query.exp.UnboundVariable

All Implemented Interfaces:

InMemoryValue, Value

public class UnboundVariable

extends java.lang.Object

implements InMemoryValue

Represents an unbound variable. When the query is evaluated, expressions containing unbound variables will be executed once for every element in the type's extent.

Constructor Summary

UnboundVariable(java.lang.String name, java.lang.Class type)
Constructor.

Method Summary

void	castTo(java.lang.Class type) Cast this value to the given type.
java.lang.Object	evaluate(java.lang.Object candidate, java.lang.Object orig, com.solarmetric.rd.kodo.runtime.PersistenceManagerImpl pm, java.util.Map params) Evaluate the given candidate.
java.lang.Class	getType()
boolean	isVariable() Return true if this value is a variable.
void	setValue(java.lang.Object value) Set the variable's current value.

Methods inherited from class java.lang.Object

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

Constructor Detail

UnboundVariable

public UnboundVariable(java.lang.String name,
                       java.lang.Class type)

Constructor. Provide variable name and type.

Method Detail

isVariable

public boolean isVariable()

Description copied from interface: Value

Return true if this value is a variable.

Specified by:

isVariable in interface Value

getType

public java.lang.Class getType()

setValue

public void setValue(java.lang.Object value)

Set the variable's current value. Expressions can be evaluated for every possible object in the extent of each unbound variable when looking for a match.

castTo

public void castTo(java.lang.Class type)

Description copied from interface: InMemoryValue

Cast this value to the given type.

Specified by:

castTo in interface InMemoryValue

evaluate

public java.lang.Object evaluate(java.lang.Object candidate,
                                 java.lang.Object orig,
                                 com.solarmetric.rd.kodo.runtime.PersistenceManagerImpl pm,
                                 java.util.Map params)

Description copied from interface: InMemoryValue

Evaluate the given candidate.

Specified by:

evaluate in interface InMemoryValue