com.whitestein.lsps.engine.state.xml

Class ExpressionValue

java.lang.Object

com.whitestein.lsps.engine.state.xml.ComplexValue

com.whitestein.lsps.engine.state.xml.ExpressionValue

All Implemented Interfaces:

Collectible, EntityWithId, EvaluationLevelAware, ModelInstanceAware, Value

Direct Known Subclasses:

ClosureExpressionValue, ExpressionExpressionValue, OperationExpressionValue, ReferenceExpressionValue

public abstract class ExpressionValue
extends ComplexValue

Persistent value representing closure.

Author:

rba

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExpressionValue.Type Type of the contained expression.

Field Summary

Fields

Modifier and Type	Field and Description
protected Expression	compiledExpression Compiled expression.

Fields inherited from class com.whitestein.lsps.engine.state.xml.ComplexValue

modelInstance

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ExpressionValue() Creates new instance of ExpressionValue.
protected	ExpressionValue(ExpressionValue source, ModelInstance targetModelInstance) Creates copy instance from source.
	ExpressionValue(long id, ModelInstance modelInstance, java.lang.String type, Context context, java.lang.String expression, Expression compiledExpression, ClosureOrigin origin) Creates new instance of ExpressionValue.
	ExpressionValue(long id, ModelInstance modelInstance, java.lang.String type, com.whitestein.lsps.engine.state.xml.ContextValue context, java.lang.String expression, Expression compiledExpression, long baseLevelValueId, ClosureOrigin origin) Creates new instance of ExpressionValue.
	ExpressionValue(SExpressionValue source, ModelInstance modelInstance) Creates a new instance from the serialized companion.

Method Summary

Modifier and Type	Method and Description
<T,E extends java.lang.Throwable> T	accept(ValueVisitor<T,E> visitor) Accepts visitor.
protected abstract Expression	compile(ModelProvider modelProvider)
protected void	convertToDirectReferences()
com.whitestein.lsps.engine.state.xml.Copiable	createCopy(ModelInstance targetModelInstance) Creates a copy without references to other objects.
protected NamespaceModel	createNamespaceModel(Context context, ModelProvider modelProvider)
protected void	fillSerializable(SExpressionValue s, SModelInstance smi, MarshallerConfig config)
void	finishCopy(com.whitestein.lsps.engine.state.xml.Copiable source, CopyHelper helper) Copy references.
ComplexValue	getBaseLevelEntity() Returns base level value.
long	getBaseLevelEntityId() Returns id of the corresponding value in base level.
Expression	getCachedCompiledExpression() Returns the cached compiled expression.
java.lang.String	getCompiled() Name of the class that represents expression compiled to java.
Expression	getCompiledExpression(ModelProvider modelProvider) Returns the compiled expression.
Context	getContext() Returns the enclosing context.
long	getContextId() Returns the enclosing context id.
int	getDebugLine() Returns debug type.
java.lang.String	getEvaluationLevel() Returns evaluation level of this value.
java.lang.String	getExpression() Returns the expression.
ClosureOrigin	getExpressionOrigin() Returns the expression origin.
abstract ExpressionValue.Type	getExpressionType() Returns the expression type.
ComplexValue	getLowerLevelEntity() Returns lower level value.
java.lang.Long	getLowerLevelEntityId() Returns id of the corresponding value in previous lower level.
java.util.Collection<Collectible>	getReferences() Returns collection of all referenced collectible objects.
void	rebind(ModelInstance modelInstance) Re-binds to a model instance.
void	refreshDirectReferences() Re-set references to elements from the same model instance.
void	replaceIdAndEvaluationLevel(long newId, long newBaseId) Replaces id and base level entity id.
void	replaceReferencedIds(java.util.Map<java.lang.Long,java.lang.Long> replacementMap) Replace referenced ids according to mappings in the replacement map.
void	setCompiled(java.lang.String compiled) Sets name of the class that represents expression compiled to java.
void	setContext(Context context) Sets the expression context.
SExpressionValue	toSerializable(SModelInstance smi, MarshallerConfig config) Creates a serializable object.
java.lang.String	toString()

Methods inherited from class com.whitestein.lsps.engine.state.xml.ComplexValue

clear, collect, fillSerializable, findReplacementId, getCompiledType, getHandle, getId, getModelInstance, getType, isPersistent, isRemoved, setLowerLevelEntity, toSimpleValue, toValue

Methods inherited from class java.lang.Object

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

Field Detail

compiledExpression

protected Expression compiledExpression

Compiled expression.

Constructor Detail

ExpressionValue

protected ExpressionValue()

Creates new instance of ExpressionValue.

ExpressionValue

protected ExpressionValue(ExpressionValue source,
                          ModelInstance targetModelInstance)

Creates copy instance from source.

Parameters:

source -

targetModelInstance -

ExpressionValue

public ExpressionValue(SExpressionValue source,
                       ModelInstance modelInstance)

Creates a new instance from the serialized companion.

Parameters:

source -

modelInstance -

ExpressionValue

public ExpressionValue(long id,
                       ModelInstance modelInstance,
                       java.lang.String type,
                       Context context,
                       java.lang.String expression,
                       Expression compiledExpression,
                       ClosureOrigin origin)

Creates new instance of ExpressionValue.

Parameters:

id -

modelInstance -

type -

context -

expression -

compiledExpression -

origin - the expression origin

Throws:

java.lang.NullPointerException - if modelInstance or type or context or expression or expressionType is null

ExpressionValue

public ExpressionValue(long id,
                       ModelInstance modelInstance,
                       java.lang.String type,
                       com.whitestein.lsps.engine.state.xml.ContextValue context,
                       java.lang.String expression,
                       Expression compiledExpression,
                       long baseLevelValueId,
                       ClosureOrigin origin)

Creates new instance of ExpressionValue.

Parameters:

id -

modelInstance -

type -

context -

expression -

compiledExpression -

baseLevelValueId -

origin - the expression origin

Method Detail

accept

public <T,E extends java.lang.Throwable> T accept(ValueVisitor<T,E> visitor)
                                           throws E extends java.lang.Throwable

Description copied from interface: Value

Accepts visitor.

Returns:

the result

Throws:

E

E extends java.lang.Throwable

getExpression

public java.lang.String getExpression()

Returns the expression.

Returns:

the expression

getContext

public Context getContext()

Returns the enclosing context.

Returns:

the enclosing context

setContext

public void setContext(Context context)

Sets the expression context.

Parameters:

context -

getContextId

public long getContextId()

Returns the enclosing context id.

Returns:

the enclosing context id

getExpressionType

public abstract ExpressionValue.Type getExpressionType()

Returns the expression type.

Returns:

the expression type

getCompiledExpression

public Expression getCompiledExpression(ModelProvider modelProvider)

Returns the compiled expression.

Parameters:

modelProvider -

Returns:

the compiled expression

compile

protected abstract Expression compile(ModelProvider modelProvider)

getCachedCompiledExpression

public Expression getCachedCompiledExpression()

Returns the cached compiled expression. Returns null if the expression is not compiled.

Returns:

the cached compiled expression, may return null

createNamespaceModel

protected NamespaceModel createNamespaceModel(Context context,
                                              ModelProvider modelProvider)

getExpressionOrigin

public ClosureOrigin getExpressionOrigin()

Returns the expression origin.

Returns:

the expression origin

getDebugLine

public int getDebugLine()

Returns debug type.

Returns:

debug type

getReferences

public java.util.Collection<Collectible> getReferences()

Description copied from interface: Collectible

Returns collection of all referenced collectible objects.

Returns:

collection of all referenced collectible objects

replaceReferencedIds

public void replaceReferencedIds(java.util.Map<java.lang.Long,java.lang.Long> replacementMap)

Description copied from class: ComplexValue

Replace referenced ids according to mappings in the replacement map.

Specified by:

replaceReferencedIds in interface EvaluationLevelAware

Overrides:

replaceReferencedIds in class ComplexValue

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getCompiled

public java.lang.String getCompiled()

Name of the class that represents expression compiled to java.

Returns:

name of the class that represents expression compiled to java

setCompiled

public void setCompiled(java.lang.String compiled)

Sets name of the class that represents expression compiled to java.

Parameters:

compiled -

toSerializable

public SExpressionValue toSerializable(SModelInstance smi,
                                       MarshallerConfig config)

Description copied from class: ComplexValue

Creates a serializable object.

Specified by:

toSerializable in interface Value

Specified by:

toSerializable in class ComplexValue

Returns:

a serializable object

fillSerializable

protected void fillSerializable(SExpressionValue s,
                                SModelInstance smi,
                                MarshallerConfig config)

replaceIdAndEvaluationLevel

public void replaceIdAndEvaluationLevel(long newId,
                                        long newBaseId)

Description copied from class: ComplexValue

Replaces id and base level entity id.

Overrides:

replaceIdAndEvaluationLevel in class ComplexValue

getEvaluationLevel

public java.lang.String getEvaluationLevel()

Description copied from class: ComplexValue

Returns evaluation level of this value.

Specified by:

getEvaluationLevel in interface EvaluationLevelAware

Overrides:

getEvaluationLevel in class ComplexValue

Returns:

evaluation level of this value

getBaseLevelEntityId

public long getBaseLevelEntityId()

Returns id of the corresponding value in base level.

Specified by:

getBaseLevelEntityId in interface EvaluationLevelAware

Overrides:

getBaseLevelEntityId in class ComplexValue

Returns:

id of the corresponding value in base level

getBaseLevelEntity

public ComplexValue getBaseLevelEntity()

Returns base level value.

Specified by:

getBaseLevelEntity in interface EvaluationLevelAware

Overrides:

getBaseLevelEntity in class ComplexValue

Returns:

base level value

getLowerLevelEntityId

public java.lang.Long getLowerLevelEntityId()

Returns id of the corresponding value in previous lower level.

Specified by:

getLowerLevelEntityId in interface EvaluationLevelAware

Overrides:

getLowerLevelEntityId in class ComplexValue

Returns:

id of the corresponding value in previous lower level

getLowerLevelEntity

public ComplexValue getLowerLevelEntity()

Returns lower level value.

Specified by:

getLowerLevelEntity in interface EvaluationLevelAware

Overrides:

getLowerLevelEntity in class ComplexValue

Returns:

lower level value

convertToDirectReferences

protected void convertToDirectReferences()

Specified by:

convertToDirectReferences in class ComplexValue

refreshDirectReferences

public void refreshDirectReferences()

Description copied from interface: EvaluationLevelAware

Re-set references to elements from the same model instance.

Specified by:

refreshDirectReferences in interface EvaluationLevelAware

Specified by:

refreshDirectReferences in class ComplexValue

finishCopy

public void finishCopy(com.whitestein.lsps.engine.state.xml.Copiable source,
                       CopyHelper helper)

Copy references.

Overrides:

finishCopy in class ComplexValue

rebind

public void rebind(ModelInstance modelInstance)

Description copied from class: ComplexValue

Re-binds to a model instance.

Specified by:

rebind in interface ModelInstanceAware

Overrides:

rebind in class ComplexValue

createCopy

public com.whitestein.lsps.engine.state.xml.Copiable createCopy(ModelInstance targetModelInstance)

Creates a copy without references to other objects.

Parameters:

targetModelInstance -

Returns:

creates a copy