com.wewebu.expression.language
Class OwExprReflectiveProperty

java.lang.Object
  com.wewebu.expression.language.OwExprReflectiveProperty

All Implemented Interfaces:

OwExprProperty, OwExprScope

public class OwExprReflectiveProperty
extends Object
implements OwExprProperty

Reflective properties are properties that rely on POJOs getters to return values.

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Constructor Summary

OwExprReflectiveProperty(String name_p, Object javaObject_p, Method propertyMethod_p)
Constructor

Method Summary

OwExprProperty	at(int index_p) Indexed scope access method
OwExprFunction	function(String functionName_p, OwExprExpressionType[] argunmentTypes_p) Function access method.
boolean	hasProperty(String propertyName_p) Property access helper method.
Class<?>	javaType()
int	length() Indexed scope access helper method
OwExprProperty	property(String propertyName_p) Property access method.
OwExprScope	solveScope(String name_p)
OwExprType	type() Performs type conversion using OwExprType.fromJavaType(Object)
OwExprValue	value()

Methods inherited from class java.lang.Object

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

Constructor Detail

OwExprReflectiveProperty

public OwExprReflectiveProperty(String name_p,
                                Object javaObject_p,
                                Method propertyMethod_p)

Constructor

Parameters:

name_p - the name of the property

javaObject_p - the underlying POJO

propertyMethod_p - the getter for this property

Method Detail

type

public OwExprType type()
                throws OwExprEvaluationException

Performs type conversion using OwExprType.fromJavaType(Object)

Specified by:

type in interface OwExprProperty

Returns:

the type of this property

Throws:

OwExprEvaluationException

value

public final OwExprValue value()
                        throws OwExprEvaluationException

Specified by:

value in interface OwExprProperty

Returns:

the value of this property

Throws:

OwExprEvaluationException

function

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

Description copied from interface: OwExprScope

Function access method.

Specified by:

function in interface OwExprScope

Parameters:

functionName_p - the name of the requested function

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

Returns:

an OwExprFunction with the requested name and argument signature residing in this scope

Throws:

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

property

public OwExprProperty property(String propertyName_p)
                        throws OwExprEvaluationException

Description copied from interface: OwExprScope

Property access method.

Specified by:

property in interface OwExprScope

Parameters:

propertyName_p - the name of the requested property

Returns:

an OwExprProperty with the requested name residing in this scope

Throws:

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

solveScope

public OwExprScope solveScope(String name_p)
                       throws OwExprEvaluationException

Throws:

OwExprEvaluationException

at

public OwExprProperty at(int index_p)
                  throws OwExprEvaluationException

Description copied from interface: OwExprScope

Indexed scope access method

Specified by:

at in interface OwExprScope

Parameters:

index_p - int index of the requested property

Returns:

the OwExprProperty property found at the requested index

Throws:

OwExprEvaluationException - if the requested indexed access has failed (index out of bounds, the creation of OwExprProperty has failed)

length

public int length()
           throws OwExprEvaluationException

Description copied from interface: OwExprScope

Indexed scope access helper method

Specified by:

length in interface OwExprScope

Returns:

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

Throws:

OwExprEvaluationException

hasProperty

public boolean hasProperty(String propertyName_p)
                    throws OwExprEvaluationException

Description copied from interface: OwExprScope

Property access helper method. Checks if a property is valid in this scope.

Specified by:

hasProperty in interface OwExprScope

Parameters:

propertyName_p - the name of the requested property

Returns:

true if this scope can perform property access for the requested property - an access via OwExprScope.property(String) will NOT fail on missing property grounds, false otherwise

Throws:

OwExprEvaluationException - if the property validity check has failed

javaType

public Class<?> javaType()
                  throws OwExprEvaluationException

Specified by:

javaType in interface OwExprProperty

Returns:

the original java type of this property

Throws:

OwExprEvaluationException