org.apache.jackrabbit.vault.fs.filter.DepthItemFilter Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jackrabbit.vault.fs.filter;
import javax.jcr.Item;
import javax.jcr.RepositoryException;
import org.apache.jackrabbit.vault.fs.api.DumpContext;
import org.apache.jackrabbit.vault.fs.api.ItemFilter;
/**
* Implements a filter that filters item according to their (passed) depth.
*
*/
public class DepthItemFilter implements ItemFilter {
/**
* The minimal depth
*/
private int minDepth = 0;
/**
* The maximal depth
*/
private int maxDepth = Integer.MAX_VALUE;
/**
* Default constructor.
*/
public DepthItemFilter() {
}
/**
* Creates a new depth filter for the given depths.
* @param minDepth the minimal depth
* @param maxDepth the maximal depth
*/
public DepthItemFilter(int minDepth, int maxDepth) {
this.minDepth = minDepth;
this.maxDepth = maxDepth;
}
/**
* Sets the minimal depth
* @param minDepth the minimal depth
*/
public void setMinDepth(String minDepth) {
this.minDepth = Integer.decode(minDepth);
}
/**
* Sets the maximal depth
* @param maxDepth the maximal depth
*/
public void setMaxDepth(String maxDepth) {
this.maxDepth = Integer.decode(maxDepth);
}
/**
* {@inheritDoc}
*
* Matches if the given depth is greater or equal the minimum depth and
* less or equal the maximum depth and if the call to {@link #matches(Item)}
* returns {@code true}.
*/
public boolean matches(Item item, int depth) throws RepositoryException {
return depth >= minDepth && depth <= maxDepth && matches(item);
}
/**
* Returns {@code true}. Subclasses can override to implement something
* useful that is dependant of the depth.
*
* @param item the item to match
* @return {@code true} if the item matches; {@code false} otherwise.
* @throws RepositoryException if an error occurs.
*/
public boolean matches(Item item) throws RepositoryException {
return true;
}
/**
* {@inheritDoc}
*/
public void dump(DumpContext ctx, boolean isLast) {
ctx.printf(isLast, "%s:", getClass().getSimpleName());
ctx.indent(isLast);
ctx.printf(false, "minDepth: %d", minDepth);
ctx.printf(true, "maxDepth: %d", maxDepth);
ctx.outdent();
}
}