com.wewebu.expression.language
Class OwExprScopeValue

java.lang.Object
  com.wewebu.expression.language.OwExprValue
      com.wewebu.expression.language.OwExprScopeValue

All Implemented Interfaces:

OwExprScope

public class OwExprScopeValue
extends OwExprValue

Scope values represent values obtained during evaluation that need to be queried for properties or functions.
Example:
employee.birthDate.year
The employee.birthDate sub-expression will be evaluated to a OwExprScopeValue

Alfresco Workdesk
Copyright (c) Alfresco Software, Inc.
All rights reserved.

For licensing information read the license.txt file or
go to: http://wiki.alfresco.com

Constructor Summary

OwExprScopeValue(OwExprScope scope_p)
Constructor

Method Summary

OwExprValue	accept(OwExprBinaryOperator binaryOperator_p, OwExprScopeValue v1_p) Stage 2 binary operator visitor acceptance method
OwExprValue	accept(OwExprBinaryOperator binaryOperator_p, OwExprValue v2_p) Stage 1 binary operator visitor acceptance method
OwExprProperty	at(int index_p) Indexed access delegate. Delegates to m_scope.
OwExprFunction	function(String functionName_p, OwExprExpressionType[] argunmentTypes_p) Scope OwExprScope.function(String, OwExprExpressionType[]) default implementation.
OwExprScope	getScope()
protected Map	getValuePropeties() Overridable default value properties factory method
boolean	hasProperty(String propertyName_p) Scope OwExprScope.hasProperty(String) default implementation.
int	length() Indexed access delegate. Delegates to m_scope.
OwExprProperty	property(String propertyName_p) Scope OwExprScope.property(String) default implementation.
OwExprScope	solveScope(String name_p)
Object	toJavaObject(Class javaSuperType_p) Java class conversion method.
String	toString()

Methods inherited from class com.wewebu.expression.language.OwExprValue

accept, accept, accept, accept, accept, accept, fromJavaValue, fromJavaValue, getJavaType

Methods inherited from class java.lang.Object

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

Constructor Detail

OwExprScopeValue

public OwExprScopeValue(OwExprScope scope_p)

Constructor

Parameters:

scope_p - the scope represented by this value

Method Detail

getValuePropeties

protected Map getValuePropeties()

Description copied from class: OwExprValue

Overridable default value properties factory method

Overrides:

getValuePropeties in class OwExprValue

Returns:

a Map of OwExprProperty for this value

accept

public OwExprValue accept(OwExprBinaryOperator binaryOperator_p,
                          OwExprValue v2_p)
                   throws OwExprEvaluationException

Description copied from class: OwExprValue

Stage 1 binary operator visitor acceptance method

Overrides:

accept in class OwExprValue

Parameters:

binaryOperator_p - binary operator visitor

v2_p - right side operator value

Returns:

the operator visit processed OwExprValue

Throws:

OwExprEvaluationException - if the operation fails for any reason (unsupported operand types , incompatible operands, unimplemented operation or operation failure at evaluation time)

accept

public OwExprValue accept(OwExprBinaryOperator binaryOperator_p,
                          OwExprScopeValue v1_p)
                   throws OwExprEvaluationException

Description copied from class: OwExprValue

Stage 2 binary operator visitor acceptance method

Overrides:

accept in class OwExprValue

Parameters:

binaryOperator_p - binary operator visitor

v1_p - lef side operator value

Returns:

the operator visit processed OwExprValue

Throws:

OwExprEvaluationException - if the operation fails for any reason (unsupported operand types , incompatible operands, unimplemented operation or operation failure at evaluation time)

toJavaObject

public Object toJavaObject(Class javaSuperType_p)
                    throws OwExprEvaluationException

Description copied from class: OwExprValue

Java class conversion method.

Specified by:

toJavaObject in class OwExprValue

Parameters:

javaSuperType_p - the requested java super type The returned type should be a subclass of this type. This is necessary for values having more than one possible java peers such as OwExprNumericValue's Integer and Double support.

Returns:

the java class peer of this value's expression language type

Throws:

OwExprEvaluationException

solveScope

public final OwExprScope solveScope(String name_p)
                             throws OwExprEvaluationException

Throws:

OwExprEvaluationException

function

public final OwExprFunction function(String functionName_p,
                                     OwExprExpressionType[] argunmentTypes_p)
                              throws OwExprEvaluationException

Description copied from class: OwExprValue

Scope OwExprScope.function(String, OwExprExpressionType[]) default implementation. By default value-scopes have no functions defined

Specified by:

function in interface OwExprScope

Overrides:

function in class OwExprValue

Parameters:

functionName_p - the requested function name

argunmentTypes_p - array of OwExprExpressionType that defines the argument signature of the requested function

Returns:

the OwExprProperty designated by propertyName_p and found in this value's scope

Throws:

OwExprEvaluationException - if the requested property is not found in this scope or the creation of the corresponding OwExprProperty has failed

property

public final OwExprProperty property(String propertyName_p)
                              throws OwExprEvaluationException

Description copied from class: OwExprValue

Scope OwExprScope.property(String) default implementation. A default value properties mechanism is implemented. Concrete values must create properties via OwExprValue.getValuePropeties().

Specified by:

property in interface OwExprScope

Overrides:

property in class OwExprValue

Parameters:

propertyName_p - the requested property name

Returns:

the OwExprProperty designated by propertyName_p and found in this value's scope

Throws:

OwExprEvaluationException - if the requested property is not found in this scope or the creation of the corresponding OwExprProperty has failed

at

public OwExprProperty at(int index_p)
                  throws OwExprEvaluationException

Indexed access delegate.
Delegates to m_scope.

Specified by:

at in interface OwExprScope

Overrides:

at in class OwExprValue

Parameters:

index_p -

Returns:

the OwExprProperty property found at the requested index

Throws:

OwExprEvaluationException

length

public int length()
           throws OwExprEvaluationException

Indexed access delegate.
Delegates to m_scope.

Specified by:

length in interface OwExprScope

Overrides:

length in class OwExprValue

Returns:

the maximum index range for which indexed access is possible in this scope

Throws:

OwExprEvaluationException

getScope

public final OwExprScope getScope()

hasProperty

public boolean hasProperty(String propertyName_p)
                    throws OwExprEvaluationException

Description copied from class: OwExprValue

Scope OwExprScope.hasProperty(String) default implementation. A default value properties mechanism is implemented. Concrete values must create properties via OwExprValue.getValuePropeties().

Specified by:

hasProperty in interface OwExprScope

Overrides:

hasProperty in class OwExprValue

Parameters:

propertyName_p -

Returns:

true if the property is defined by this value or by the represented scope

Throws:

OwExprEvaluationException

toString

public String toString()

Overrides:

toString in class Object