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git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@131070 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Stephen Colebourne 2003-05-11 13:14:51 +00:00
parent c9feea13e4
commit 340c5f0af9
2 changed files with 57 additions and 46 deletions
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34
src/java/org/apache/commons/collections/decorators/PredicatedCollection.java
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@ -1,5 +1,5 @@
/*
* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/java/org/apache/commons/collections/decorators/Attic/PredicatedCollection.java,v 1.2 2003/05/07 11:20:21 scolebourne Exp $
* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/java/org/apache/commons/collections/decorators/Attic/PredicatedCollection.java,v 1.3 2003/05/11 13:14:51 scolebourne Exp $
* ====================================================================
*
* The Apache Software License, Version 1.1
@ -70,7 +70,7 @@ import org.apache.commons.collections.Predicate;
* is thrown.
*
* @since Commons Collections 3.0
* @version $Revision: 1.2 $ $Date: 2003/05/07 11:20:21 $
* @version $Revision: 1.3 $ $Date: 2003/05/11 13:14:51 $
*
* @author Stephen Colebourne
* @author Paul Jack
@ -117,6 +117,21 @@ public class PredicatedCollection extends AbstractCollectionDecorator {
}
}
/**
* Validates the object being added to ensure it matches the predicate.
* <p>
* The predicate itself should not throw an exception, but return false to
* indicate that the object cannot be added.
*
* @param object the object being added
* @throws IllegalArgumentException if the add is invalid
*/
protected void validate(Object object) {
if (predicate.evaluate(object) == false) {
throw new IllegalArgumentException("Cannot add Object '" + object + "' - Predicate rejected it");
}
}
//-----------------------------------------------------------------------
/**
* Override to validate the object being added to ensure it matches
@ -147,19 +162,4 @@ public class PredicatedCollection extends AbstractCollectionDecorator {
return getCollection().addAll(coll);
}
/**
* Validates the object being added to ensure it matches the predicate.
* <p>
* The predicate itself should not throw an exception, but return false to
* indicate that the object cannot be added.
*
* @param object the object being added
* @throws IllegalArgumentException if the add is invalid
*/
protected void validate(Object object) {
if (predicate.evaluate(object) == false) {
throw new IllegalArgumentException("Cannot add Object '" + object + "' - Predicate rejected it");
}
}
}

69
src/java/org/apache/commons/collections/decorators/PredicatedList.java
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@ -1,5 +1,5 @@
/*
* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/java/org/apache/commons/collections/decorators/Attic/PredicatedList.java,v 1.2 2003/05/07 11:20:21 scolebourne Exp $
* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/java/org/apache/commons/collections/decorators/Attic/PredicatedList.java,v 1.3 2003/05/11 13:14:51 scolebourne Exp $
* ====================================================================
*
* The Apache Software License, Version 1.1
@ -72,7 +72,7 @@ import org.apache.commons.collections.Predicate;
* is thrown.
*
* @since Commons Collections 3.0
* @version $Revision: 1.2 $ $Date: 2003/05/07 11:20:21 $
* @version $Revision: 1.3 $ $Date: 2003/05/11 13:14:51 $
*
* @author Stephen Colebourne
* @author Paul Jack
@ -119,18 +119,6 @@ public class PredicatedList extends PredicatedCollection implements List {
}
//-----------------------------------------------------------------------
public void add(int index, Object object) {
validate(object);
getList().add(index, object);
}
public boolean addAll(int index, Collection coll) {
for (Iterator it = coll.iterator(); it.hasNext(); ) {
validate(it.next());
}
return getList().addAll(index, coll);
}
public Object get(int index) {
return getList().get(index);
}
@ -143,26 +131,29 @@ public class PredicatedList extends PredicatedCollection implements List {
return getList().lastIndexOf(object);
}
public Object remove(int index) {
return getList().remove(index);
}
//-----------------------------------------------------------------------
public void add(int index, Object object) {
validate(object);
getList().add(index, object);
}
public boolean addAll(int index, Collection coll) {
for (Iterator it = coll.iterator(); it.hasNext(); ) {
validate(it.next());
}
return getList().addAll(index, coll);
}
public ListIterator listIterator() {
return listIterator(0);
}
public ListIterator listIterator(int i) {
return new AbstractListIteratorDecorator(getList().listIterator(i)) {
public void add(Object object) {
validate(object);
getIterator().add(object);
}
public void set(Object object) {
validate(object);
getIterator().set(object);
}
};
}
public Object remove(int index) {
return getList().remove(index);
return new PredicatedListIterator(getList().listIterator(i));
}
public Object set(int index, Object object) {
@ -175,4 +166,24 @@ public class PredicatedList extends PredicatedCollection implements List {
return new PredicatedList(sub, predicate);
}
/**
* Inner class Iterator for the PredicatedList
*/
protected class PredicatedListIterator extends AbstractListIteratorDecorator {
protected PredicatedListIterator(ListIterator iterator) {
super(iterator);
}
public void add(Object object) {
validate(object);
getIterator().add(object);
}
public void set(Object object) {
validate(object);
getIterator().set(object);
}
}
}