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Oracle Fusion Middleware Java API for Oracle WebLogic Portal 10g Release 3 (10.3.2) E14255-01 |
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java.lang.Object
com.bea.p13n.expression.internal.ComplexExpressionImpl
com.bea.p13n.expression.operator.Operator
com.bea.p13n.expression.operator.ClassNewInstance
public final class ClassNewInstance
Implementation of the ClassNewInstance operator. Returns an newly constructed object by invoking a specified constructor.
Input 1: A Class object (or expression that evaluates to a Class) that defines the Class that should be created.
Input 2: A Class[] (or expression that evaluates to a Class[]) that defines the signature of the constructor that should be invoked. If input 2 is null the operator will attempt to deduce the constructor to call from the arguments (input 3).
Input 3: A Object[] (or expression that evaluates to a Object[]) that contains the arguments that should be passed to the constructor.
Returns: A new instance of the class, instantiated with the constructor of the provided signature using the supplied arguments..
Field Summary |
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Fields inherited from interface com.bea.p13n.expression.ExpressionEvents |
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EVENT_ADD_SUBEXPRESSION, EVENT_CLEAR_CACHE, EVENT_INTERNAL_MAX, EVENT_REMOVE_SUBEXPRESSION, EVENT_SET_CACHE_ENABLED, EVENT_SET_CACHED_VALUE, EVENT_SET_PARENT, EVENT_SET_SOURCE, EVENT_SET_SUBEXPRESSION, EVENT_SET_USER_DATA |
Constructor Summary | |
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ClassNewInstance() Constructs an empty operator and operands can be added later by calling addSubExpression() on this. |
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ClassNewInstance(Object clazz, Object constructorSignature, Object args) Constructs this with the given clazz , constructorSignature</code. |
Method Summary | |
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Class[] |
getParameterSignature() Returns the parameter signature for this Expression . |
Methods inherited from class com.bea.p13n.expression.operator.Operator |
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leftHandSide, operand, rightHandSide |
Methods inherited from class com.bea.p13n.expression.internal.ComplexExpressionImpl |
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addListener, addSubExpression, clearCache, clone, createProxyExpression, equals, getCachedValue, getParent, getSource, getSubExpression, getSubExpressionCount, getUserData, hashCode, isCached, isCacheEnabled, isEqualitySubExpression, notifyListeners, removeAllSubExpressions, removeListener, removeSubExpression, removeSubExpression, setCachedValue, setCacheEnabled, setParent, setSource, setSubExpression, setUserData, toString, write |
Methods inherited from class java.lang.Object |
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finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public ClassNewInstance()
public ClassNewInstance(Object clazz, Object constructorSignature, Object args)
clazz
, constructorSignature</code. and
args parameters.
clazz
- The Class
whose instance has to be created.constructorSignature
- The parameter signature of a constructor that will be used to create an instance of clazz
.args
- The arguments to be passed to the constructor.Method Detail |
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public Class[] getParameterSignature()
Expression
Expression
. Because the sub-expressions within the Expression
are typically arguments or operands, some type validation is performed by examining the class types of the sub-expressions against the Expression
's parameter signature.
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Oracle Fusion Middleware Java API for Oracle WebLogic Portal 10g Release 3 (10.3.2) E14255-01 |
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