Package org.codehaus.plexus.interpolation

Class AbstractDelegatingValueSource

java.lang.Object

org.codehaus.plexus.interpolation.AbstractDelegatingValueSource

All Implemented Interfaces:

ValueSource

Direct Known Subclasses:

PrefixedObjectValueSource, PrefixedPropertiesValueSource

public abstract class AbstractDelegatingValueSource
extends java.lang.Object
implements ValueSource

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractDelegatingValueSource(ValueSource delegate)

Method Summary

Modifier and Type	Method	Description
void	clearFeedback()	Clear the feedback accumulated by a prior interpolation run.
protected ValueSource	getDelegate()
java.util.List	getFeedback()	Return the feedback about resolution failures for a particular expression.
java.lang.Object	getValue(java.lang.String expression)
java.lang.Object	getValue(java.lang.String expression, java.lang.String delimiterStart, java.lang.String delimiterEnd)	Returns a value resolved from an expression.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractDelegatingValueSource

protected AbstractDelegatingValueSource(ValueSource delegate)

Method Detail

getDelegate

protected ValueSource getDelegate()

getValue

public java.lang.Object getValue(java.lang.String expression,
                                 java.lang.String delimiterStart,
                                 java.lang.String delimiterEnd)

Description copied from interface: ValueSource

Returns a value resolved from an expression. The return value is recursively resolved via BasicInterpolator.interpolate(String), i.e. might contain expressions as well.

Specified by:

getValue in interface ValueSource

Parameters:

expression - The string expression.

delimiterStart - A valid start delimiter of the expression to be used with the calling Interpolator (by default ${).

delimiterEnd - A valid end delimiter of the expression to be used with the calling Interpolator (by default }).

Returns:

the value related to the expression, or null if not found. This value might contain other expressions separated by expressionStartDelimiter and expressionEndDelimiter

getValue

public java.lang.Object getValue(java.lang.String expression)

Specified by:

getValue in interface ValueSource

Parameters:

expression - The string expression.

Returns:

the value related to the expression, or null if not found.

See Also:

ValueSource.getValue(String, String, String)

clearFeedback

public void clearFeedback()

Description copied from interface: ValueSource

Clear the feedback accumulated by a prior interpolation run.

Specified by:

clearFeedback in interface ValueSource

getFeedback

public java.util.List getFeedback()

Description copied from interface: ValueSource

Return the feedback about resolution failures for a particular expression.

Specified by:

getFeedback in interface ValueSource

Returns:

a combination of String and Throwable instances, where strings related to throwables are listed first.