com.whitestein.lsps.lang

Class ReferenceExpressionHolder

java.lang.Object

com.whitestein.lsps.lang.ReferenceExpressionHolder

All Implemented Interfaces:

ReferenceHolder, ValueHolder

public class ReferenceExpressionHolder
extends java.lang.Object
implements ReferenceHolder

ReferenceExpression to ReferenceHolder adapter. This adapter does not support handles.s

Author:

rba

Constructor Summary

Constructors

Constructor and Description
ReferenceExpressionHolder(Namespace namespace, ReferenceType referenceType, ReferenceExpression referenceExpression, java.util.List<Property> additionalProperties, ClosureOrigin origin) Creates new instance of ReferenceExpressionHolder.

Method Summary

Modifier and Type	Method and Description
java.util.List<Property>	getAdditionalProperties() Returns additional properties that are added to the referenced path.
ClosureOrigin	getClosureOrigin()
java.lang.String	getExpressionString() Returns a string representation of this reference holder expression.
java.lang.String	getId() Returns the id of the holder if present.
Namespace	getNamespace() Returns namespace
ValueHolder	getNotCompiledValueHolder()
Path	getPath() Returns referenced path if a property is referenced.
Property	getProperty() Returns last referenced property if a property is referenced.
RecordHolder	getPropertyRecord(InterpreterStackTrace stackTrace) Returns root record for the property if a property is referenced.
ReferenceType	getType() Returns the type of the holder.
java.lang.Object	getValue(InterpreterStackTrace stackTrace) Gets the value of the referenced element.
java.lang.Object	getValue(java.lang.String evaluationLevel, InterpreterStackTrace stackTrace) Returns value of referenced value-holder (variable/record) in the specified evaluation level.
boolean	isChanged() Returns true if referenced place holder has changed value.
void	setValue(java.lang.Object value, InterpreterStackTrace stackTrace) Sets the value of the referenced element.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.whitestein.lsps.lang.exec.ReferenceHolder

getPropertyRecord, getValue, setValue

Constructor Detail

ReferenceExpressionHolder

public ReferenceExpressionHolder(Namespace namespace,
                                 ReferenceType referenceType,
                                 ReferenceExpression referenceExpression,
                                 java.util.List<Property> additionalProperties,
                                 ClosureOrigin origin)

Creates new instance of ReferenceExpressionHolder.

Parameters:

namespace -

referenceType -

referenceExpression -

additionalProperties -

origin -

Method Detail

getId

public java.lang.String getId()

Description copied from interface: ValueHolder

Returns the id of the holder if present.

Specified by:

getId in interface ValueHolder

Returns:

the id of the holder if present

getType

public ReferenceType getType()

Description copied from interface: ValueHolder

Returns the type of the holder.

Specified by:

getType in interface ReferenceHolder

Specified by:

getType in interface ValueHolder

Returns:

the type of the holder

getValue

public java.lang.Object getValue(InterpreterStackTrace stackTrace)
                          throws ErrorException

Description copied from interface: ReferenceHolder

Gets the value of the referenced element.

Specified by:

getValue in interface ReferenceHolder

Returns:

the value of the referenced element

Throws:

ErrorException

setValue

public void setValue(java.lang.Object value,
                     InterpreterStackTrace stackTrace)
              throws ErrorException

Description copied from interface: ReferenceHolder

Sets the value of the referenced element.

Specified by:

setValue in interface ReferenceHolder

stackTrace - a stack trace

Throws:

ErrorException

getExpressionString

public java.lang.String getExpressionString()

Description copied from interface: ReferenceHolder

Returns a string representation of this reference holder expression.

Specified by:

getExpressionString in interface ReferenceHolder

Returns:

a string representation of this reference holder expression

getProperty

public Property getProperty()

Description copied from interface: ReferenceHolder

Returns last referenced property if a property is referenced. Returns null in other cases.

Specified by:

getProperty in interface ReferenceHolder

Returns:

referenced property

getAdditionalProperties

public java.util.List<Property> getAdditionalProperties()

Description copied from interface: ReferenceHolder

Returns additional properties that are added to the referenced path.

Specified by:

getAdditionalProperties in interface ReferenceHolder

Returns:

additional properties that are added to the referenced path.

getPath

public Path getPath()

Description copied from interface: ReferenceHolder

Returns referenced path if a property is referenced. Returns null in other cases.

Specified by:

getPath in interface ReferenceHolder

Returns:

referenced path

getPropertyRecord

public RecordHolder getPropertyRecord(InterpreterStackTrace stackTrace)
                               throws ErrorException

Description copied from interface: ReferenceHolder

Returns root record for the property if a property is referenced. Returns null in other cases.

Specified by:

getPropertyRecord in interface ReferenceHolder

Parameters:

stackTrace - a stack trace

Returns:

root record for the property

Throws:

ErrorException

isChanged

public boolean isChanged()

Description copied from interface: ReferenceHolder

Returns true if referenced place holder has changed value. It fails if the reference is in the base evaluation level, in such case there is no way to detect changes.

Specified by:

isChanged in interface ReferenceHolder

Returns:

true if referenced place holder has changed value

getValue

public java.lang.Object getValue(java.lang.String evaluationLevel,
                                 InterpreterStackTrace stackTrace)

Description copied from interface: ReferenceHolder

Returns value of referenced value-holder (variable/record) in the specified evaluation level. It fails if the referenced value-holder does not exist on the specified evaluation level.

Specified by:

getValue in interface ReferenceHolder

stackTrace - a stack trace

Returns:

referenced value transformed to the required level

getNamespace

public Namespace getNamespace()

Description copied from interface: ReferenceHolder

Returns namespace

Specified by:

getNamespace in interface ReferenceHolder

Returns:

namespace

getNotCompiledValueHolder

public ValueHolder getNotCompiledValueHolder()

Specified by:

getNotCompiledValueHolder in interface ValueHolder

getClosureOrigin

public ClosureOrigin getClosureOrigin()

Specified by:

getClosureOrigin in interface ReferenceHolder

Returns:

the closure origin, may be null