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java.lang.Objectorg.codehaus.plexus.interpolation.PrefixAwareRecursionInterceptor
public class PrefixAwareRecursionInterceptor
RecursionInterceptor
implementation that provides support for expressions
with multiple synonyms, such as project.build.directory == pom.build.directory ==
build.directory in Maven's POM.
Field Summary | |
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static java.lang.String |
DEFAULT_END_TOKEN
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static java.lang.String |
DEFAULT_START_TOKEN
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Constructor Summary | |
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PrefixAwareRecursionInterceptor(java.util.Collection possiblePrefixes)
Use the specified expression prefixes to detect synonyms. |
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PrefixAwareRecursionInterceptor(java.util.Collection possiblePrefixes,
boolean watchUnprefixedExpressions)
Use the specified expression prefixes to detect synonyms, and specify whether unprefixed expressions can be considered synonyms. |
Method Summary | |
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void |
expressionResolutionFinished(java.lang.String expression)
Signal to the interceptor that the all efforts to resolve the given expression have completed - whether successfully or not is irrelevant - and that the expression should not be tracked for recursion any longer. |
void |
expressionResolutionStarted(java.lang.String expression)
Log the intention to start resolving the given expression. |
java.util.List |
getExpressionCycle(java.lang.String expression)
When an expression is determined to be a recursive reference, this method returns the sublist of tracked expressions that participate in this cycle. |
boolean |
hasRecursiveExpression(java.lang.String expression)
Check whether the given value contains an expression that is currently being tracked by this interceptor. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final java.lang.String DEFAULT_START_TOKEN
public static final java.lang.String DEFAULT_END_TOKEN
Constructor Detail |
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public PrefixAwareRecursionInterceptor(java.util.Collection possiblePrefixes, boolean watchUnprefixedExpressions)
possiblePrefixes
- The collection of expression prefixes supportedwatchUnprefixedExpressions
- Whether to consider unprefixed expressions as synonymspublic PrefixAwareRecursionInterceptor(java.util.Collection possiblePrefixes)
possiblePrefixes
- The collection of expression prefixes supportedMethod Detail |
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public boolean hasRecursiveExpression(java.lang.String expression)
RecursionInterceptor
hasRecursiveExpression
in interface RecursionInterceptor
expression
- The value to check for expression cycles.
public void expressionResolutionFinished(java.lang.String expression)
RecursionInterceptor
expressionResolutionFinished
in interface RecursionInterceptor
expression
- The expression to stop tracking.public void expressionResolutionStarted(java.lang.String expression)
RecursionInterceptor
expressionResolutionStarted
in interface RecursionInterceptor
expression
- The expression to be resolved.public java.util.List getExpressionCycle(java.lang.String expression)
Collections.EMPTY_LIST
. Also, if the expression doesn't have a matched
prefix from this interceptor's list, and unprefixed expressions aren't allowed
then return Collections.EMPTY_LIST
.
getExpressionCycle
in interface RecursionInterceptor
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