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java.lang.Object com.novell.xml.xpath.BooleanValue
Class to represent a boolean expression value
Field Summary |
Fields inherited from interface com.novell.xml.xpath.ExpressionValue |
BOOLEAN, EXTENDED, NATIVE, NODE_SET, NUMBER, STRING |
Constructor Summary | |
BooleanValue()
Construct a default BooleanValue for use in casting. |
|
BooleanValue(boolean v)
Construct boolean value |
Method Summary | |
void |
castFrom(Object type)
Convert from a different type of expression value to the BooleanValue type This is used primarily for converting parameters for function calls. |
void |
dump(PrintWriter writer)
Output a human-readable form for the value |
void |
dump(PrintWriter writer,
int indent)
Print the expression in a readable form for debugging. |
boolean |
equals(Object other)
Compare this object to another. |
ExpressionValue |
evaluate(Node contextNode,
ExpressionContext context)
Evaluate the expression with repect to the passed context |
static Class |
getArgType()
Return the Class object for objects of this type. |
boolean |
getBooleanValue()
Return boolean value of expression value (will convert to boolean if value is not of type boolean) |
Object |
getNativeValue()
return the underlying native value (java.lang.Boolean, java.lang.Double, etc.) |
NodeSet |
getNodeSetValue()
Return node-set value of this ExpressionValue. |
double |
getNumberValue()
Return numeric value of ExpressionValue. |
Class |
getResultType()
Return the Class object describing the result type of the expression. |
String |
getStringValue()
Return string value of this ExpressionValue. |
int |
getValueType()
Return type of expression value |
int |
hashCode()
Return a hash code for this object. |
boolean |
isConstant()
Return true if the expression is a constant value. |
void |
not()
Convenience function that performs a logical not on the value of the BooleanValue |
void |
registerForReset(XPathResetRegistrar registrar)
Register this expression or any subexpression that implements XPathResetCache with an object that wants to call resetCache() |
String |
toString()
Provide a readable description for debugging. |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public BooleanValue(boolean v)
v
- public BooleanValue()
Method Detail |
public static Class getArgType()
public String toString()
public ExpressionValue evaluate(Node contextNode, ExpressionContext context)
evaluate
in interface Expression
contextNode
- context node for expression evaluationcontext
- expression context for expression evaluation
public boolean isConstant()
isConstant
in interface Expression
public Class getResultType()
getResultType
in interface Expression
public void registerForReset(XPathResetRegistrar registrar)
resetCache()
registerForReset
in interface Expression
public void dump(PrintWriter writer, int indent)
dump
in interface Expression
writer
- The output device.indent
- Number of tabs to indent the result.public int getValueType()
getValueType
in interface ExpressionValue
public void castFrom(Object type) throws XPathConversionException
castFrom
in interface ExpressionValue
type
- The object to convert from.
XPathConversionException
public boolean getBooleanValue() throws XPathConversionException
getBooleanValue
in interface ExpressionValue
XPathConversionException
public double getNumberValue() throws XPathConversionException
getNumberValue
in interface ExpressionValue
XPathConversionException
public String getStringValue()
getStringValue
in interface ExpressionValue
public NodeSet getNodeSetValue() throws XPathConversionException
getNodeSetValue
in interface ExpressionValue
XPathConversionException
public Object getNativeValue()
getNativeValue
in interface ExpressionValue
public void dump(PrintWriter writer)
dump
in interface ExpressionValue
writer
- Output devicepublic void not()
public int hashCode()
ava.lang.Boolean
.
public boolean equals(Object other)
true
if the other Object
is
a BooleanValue
or a java.lang.Boolean
that represents the same
boolean value as this object.
other
- the Object
to compare against.
true
or false
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