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java.lang.Objectorg.apache.commons.jxpath.ri.compiler.Expression
org.apache.commons.jxpath.ri.compiler.Path
org.apache.commons.jxpath.ri.compiler.ExpressionPath
public class ExpressionPath
An element of the parse tree that represents an expression path, which is a
path that starts with an expression like a function call: getFoo(.)
/bar.
| Nested Class Summary |
|---|
| Nested classes/interfaces inherited from class org.apache.commons.jxpath.ri.compiler.Expression |
|---|
Expression.PointerIterator, Expression.ValueIterator |
| Field Summary |
|---|
| Fields inherited from class org.apache.commons.jxpath.ri.compiler.Expression |
|---|
NOT_A_NUMBER, ONE, ZERO |
| Constructor Summary | |
|---|---|
ExpressionPath(Expression expression,
Expression[] predicates,
Step[] steps)
Create a new ExpressionPath. |
|
| Method Summary | |
|---|---|
Object |
compute(EvalContext context)
Evaluates the expression. |
boolean |
computeContextDependent()
Returns true if the root expression or any of the predicates or the path steps are context dependent. |
Object |
computeValue(EvalContext context)
Evaluates the expression. |
protected Object |
expressionPath(EvalContext evalContext,
boolean firstMatch)
Walks an expression path (a path that starts with an expression) |
Expression |
getExpression()
Get the expression. |
Expression[] |
getPredicates()
Predicates are the expressions in brackets that may follow the root expression of the path. |
boolean |
isSimpleExpressionPath()
Recognized paths formatted as $x[3]/foo[2]. |
String |
toString()
|
| Methods inherited from class org.apache.commons.jxpath.ri.compiler.Path |
|---|
areBasicPredicates, buildContextChain, createContextForStep, evalSteps, getSingleNodePointerForSteps, getSteps, isSimplePath, isSimpleStep, searchForPath |
| Methods inherited from class org.apache.commons.jxpath.ri.compiler.Expression |
|---|
isContextDependent, iterate, iteratePointers |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
|---|
public ExpressionPath(Expression expression,
Expression[] predicates,
Step[] steps)
expression - Expressionpredicates - to executesteps - navigation| Method Detail |
|---|
public Expression getExpression()
public Expression[] getPredicates()
public boolean computeContextDependent()
computeContextDependent in class Pathpublic boolean isSimpleExpressionPath()
$x[3]/foo[2]. The
evaluation of such "simple" paths is optimized and streamlined.
public String toString()
toString in class Objectpublic Object compute(EvalContext context)
Expression
compute in class Expressioncontext - evaluation context
public Object computeValue(EvalContext context)
Expression
computeValue in class Expressioncontext - evaluation context
protected Object expressionPath(EvalContext evalContext,
boolean firstMatch)
evalContext - base contextfirstMatch - whether to return the first match found
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