|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
public interface CompiledExpression
Represents a compiled XPath. The interpretation of compiled XPaths may be faster, because it bypasses the compilation step. The reference implementation of JXPathContext also globally caches some of the results of compilation, so the direct use of JXPathContext is not always less efficient than the use of CompiledExpression.
Use CompiledExpression only when there is a need to evaluate the same expression multiple times and the CompiledExpression can be conveniently cached.
To acqure a CompiledExpression, call JXPathContext.compile
Method Summary | |
---|---|
Pointer |
createPath(JXPathContext context)
Creates intermediate elements of the path by invoking an AbstractFactory, which should first be installed on the context by calling "setFactory". |
Pointer |
createPathAndSetValue(JXPathContext context,
java.lang.Object value)
The same as setValue, except it creates intermediate elements of the path by invoking an AbstractFactory, which should first be installed on the context by calling "setFactory". |
Pointer |
getPointer(JXPathContext context,
java.lang.String xpath)
Traverses the xpath and returns a Pointer. |
java.lang.Object |
getValue(JXPathContext context)
Evaluates the xpath and returns the resulting object. |
java.lang.Object |
getValue(JXPathContext context,
java.lang.Class requiredType)
Evaluates the xpath, converts the result to the specified class and returns the resulting object. |
java.util.Iterator |
iterate(JXPathContext context)
Traverses the xpath and returns a Iterator of all results found for the path. |
java.util.Iterator |
iteratePointers(JXPathContext context)
Traverses the xpath and returns an Iterator of Pointers. |
void |
removeAll(JXPathContext context)
Remove all graph elements described by this expression |
void |
removePath(JXPathContext context)
Remove the graph element described by this expression |
void |
setValue(JXPathContext context,
java.lang.Object value)
Modifies the value of the property described by the supplied xpath. |
Method Detail |
---|
java.lang.Object getValue(JXPathContext context)
java.lang.Object getValue(JXPathContext context, java.lang.Class requiredType)
void setValue(JXPathContext context, java.lang.Object value)
Pointer createPath(JXPathContext context)
Pointer createPathAndSetValue(JXPathContext context, java.lang.Object value)
Will throw an exception if one of the following conditions occurs:
java.util.Iterator iterate(JXPathContext context)
Pointer getPointer(JXPathContext context, java.lang.String xpath)
java.util.Iterator iteratePointers(JXPathContext context)
void removePath(JXPathContext context)
void removeAll(JXPathContext context)
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |