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improve SearchUtil

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This commit is contained in:
Sebastian Sdorra
2011-02-12 15:43:27 +01:00
parent 89f65b34eb
commit cb56de5670
4 changed files with 172 additions and 25 deletions
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54
scm-core/src/main/java/sonia/scm/Filter.java Normal file
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@@ -0,0 +1,54 @@
/**
* Copyright (c) 2010, Sebastian Sdorra
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of SCM-Manager; nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* http://bitbucket.org/sdorra/scm-manager
*
*/
package sonia.scm;
/**
*
* @author Sebastian Sdorra
*
* @param <T>
*/
public interface Filter<T>
{
/**
* Method description
*
*
* @param item
*
* @return
*/
public boolean accept(T item);
}

54
scm-core/src/main/java/sonia/scm/TransformFilter.java Normal file
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@@ -0,0 +1,54 @@
/**
* Copyright (c) 2010, Sebastian Sdorra
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of SCM-Manager; nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* http://bitbucket.org/sdorra/scm-manager
*
*/
package sonia.scm;
/**
*
* @author Sebastian Sdorra
*
* @param <T>
*/
public interface TransformFilter<T>
{
/**
* Method description
*
*
* @param item
*
* @return
*/
public T accept(T item);
}

52
scm-core/src/main/java/sonia/scm/search/SearchUtil.java
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@@ -35,8 +35,17 @@ package sonia.scm.search;
//~--- non-JDK imports --------------------------------------------------------
import sonia.scm.Filter;
import sonia.scm.TransformFilter;
import sonia.scm.util.Util;
//~--- JDK imports ------------------------------------------------------------
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
/**
*
* @author Sebastian Sdorra
@@ -120,6 +129,49 @@ public class SearchUtil
return result;
}
/**
* Method description
*
*
* @param searchRequest
* @param collection
* @param filter
* @param <T>
*
* @return
*/
public static <T> Collection<T> search(SearchRequest searchRequest,
Collection<T> collection, TransformFilter<T> filter)
{
List<T> items = new ArrayList<T>();
int index = 0;
int counter = 0;
Iterator<T> it = collection.iterator();
while (it.hasNext())
{
T item = filter.accept(it.next());
if (item != null)
{
index++;
if (searchRequest.getStartWith() <= index)
{
items.add(item);
counter++;
if (searchRequest.getMaxResults() <= counter)
{
break;
}
}
}
}
return items;
}
/**
* Method description
*