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java.lang.Object com.bea.p13n.expression.internal.ComplexExpressionImpl com.bea.p13n.expression.operator.Operator com.bea.p13n.expression.operator.SystemGetProperty
Implementation of the SystemGetProperty operator. Returns
a String object which is the value of the System property.
Input 1: A String (or expression that evaluates to a String) that
is the value of the System property with the given name.
Returns: A String that is the result of calling System.getProperty.
Field Summary |
Fields inherited from interface com.bea.p13n.expression.operator.UnaryOperator |
UNARY_OPERAND_INDEX |
Constructor Summary | |
SystemGetProperty()
Constructs an empty operator and operands can be added later by calling addSubExpression() on this. |
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SystemGetProperty(Object name)
Constructs this by storing the given name as an operand of this. |
Method Summary | |
Object |
getOperand()
Returns unary operand. |
Class[] |
getParameterSignature()
Returns the parameter signature for this Expression .
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Methods inherited from class com.bea.p13n.expression.operator.Operator |
leftHandSide, operand, rightHandSide |
Methods inherited from class com.bea.p13n.expression.internal.ComplexExpressionImpl |
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 |
finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public SystemGetProperty()
public SystemGetProperty(Object name)
name
as an operand of this.
Method Detail |
public Object getOperand()
UnaryOperator
getOperand
in interface UnaryOperator
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.
getParameterSignature
in interface Expression
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