org.jboss.vfs.VisitorAttributes Maven / Gradle / Ivy
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* JBoss, Home of Professional Open Source
* Copyright 2006, JBoss Inc., and individual contributors as indicated
* by the @authors tag.
*
* Licensed 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.jboss.vfs;
import static org.jboss.vfs.VFSMessages.MESSAGES;
/**
* Attributes used when visiting a virtual file system
*
* @author Adrian Brock
* @author [email protected]
* @version $Revision: 1.1 $
*/
public class VisitorAttributes {
/**
* A VirtualFileFilter than accepts any file
*/
public static final AcceptAnyFilter RECURSE_ALL = new AcceptAnyFilter();
/**
* The default attributes - visit leaves and non-leaves, no recursion, no root
*/
public static final VisitorAttributes DEFAULT = new ImmutableVisitorAttributes();
/**
* Visit leaves only and do not recurse non-leaf files
*/
public static final VisitorAttributes LEAVES_ONLY = new ImmutableVisitorAttributes(true, null);
/**
* Recurse and visit all non-leaf files
*/
public static final VisitorAttributes RECURSE = new ImmutableVisitorAttributes(false, RECURSE_ALL);
/**
* Recurse all non-leaf files but only visit leaves
*/
public static final VisitorAttributes RECURSE_LEAVES_ONLY = new ImmutableVisitorAttributes(true, RECURSE_ALL);
/**
* Whether to include the root
*/
private boolean includeRoot;
/**
* Whether to only visit leaves
*/
private boolean leavesOnly;
/**
* Whether to ignore individual file errors
*/
private boolean ignoreErrors;
/**
* Whether to include hidden files
*/
private boolean includeHidden;
/**
* A filter used to control whether a non-leaf is recursive visited
*/
private VirtualFileFilter recurseFilter;
/**
* Whether to visit leaves only
*
* Default: false
*
* @return the visit leaves only.
*/
public boolean isLeavesOnly() {
return leavesOnly;
}
/**
* Set the leaves only.
*
* @param leavesOnly the leaves only
* @throws IllegalStateException if you attempt to modify one of the preconfigured static values of this class
*/
public void setLeavesOnly(boolean leavesOnly) {
this.leavesOnly = leavesOnly;
}
/**
* Whether to recurse into the non-leaf file. If there is a recurse filter then the result will by its
* accepts(file) value.
*
* Default: false
*
* @param file the file
* @return the recurse flag.
*/
public boolean isRecurse(VirtualFile file) {
boolean recurse = false;
if (recurseFilter != null) { recurse = recurseFilter.accepts(file); }
return recurse;
}
/**
* Get the recurse filter.
*
* @return the current recurse filter.
*/
public VirtualFileFilter getRecurseFilter() {
return recurseFilter;
}
/**
* Set the recurse filter.
*
* @param filter - the recurse filter.
* @throws IllegalStateException if you attempt to modify one of the preconfigured static values of this class
*/
public void setRecurseFilter(VirtualFileFilter filter) {
recurseFilter = filter;
}
/**
* Whether to include the root of the visit
*
* Default: false
*
* @return the includeRoot.
*/
public boolean isIncludeRoot() {
return includeRoot;
}
/**
* Set the includeRoot.
*
* @param includeRoot the includeRoot.
* @throws IllegalStateException if you attempt to modify one of the preconfigured static values of this class
*/
public void setIncludeRoot(boolean includeRoot) {
this.includeRoot = includeRoot;
}
/**
* Whether to ignore individual errors
*
* Default: false
*
* @return the ignoreErrors.
*/
public boolean isIgnoreErrors() {
return ignoreErrors;
}
/**
* Set the ignoreErrors.
*
* @param ignoreErrors the ignoreErrors.
* @throws IllegalStateException if you attempt to modify one of the preconfigured static values of this class
*/
public void setIgnoreErrors(boolean ignoreErrors) {
this.ignoreErrors = ignoreErrors;
}
/**
* Whether to include hidden files
*
* Default: false
*
* @return the includeHidden.
*/
public boolean isIncludeHidden() {
return includeHidden;
}
/**
* Set the includeHidden.
*
* @param includeHidden the includeHidden.
* @throws IllegalStateException if you attempt to modify one of the preconfigured static values of this class
*/
public void setIncludeHidden(boolean includeHidden) {
this.includeHidden = includeHidden;
}
private static class AcceptAnyFilter implements VirtualFileFilter {
public boolean accepts(VirtualFile file) {
return true;
}
}
/**
* Immutable version of the attribues
*/
private static class ImmutableVisitorAttributes extends VisitorAttributes {
/**
* Create a new ImmutableVirtualFileVisitorAttributes with default values
*/
public ImmutableVisitorAttributes() {
}
/**
* Create a new ImmutableVirtualFileVisitorAttributes.
*
* @param leavesOnly whether to visit leaves only
* @param recurseFilter - filter which controls whether to recurse
*/
public ImmutableVisitorAttributes(boolean leavesOnly, VirtualFileFilter recurseFilter) {
super.setLeavesOnly(leavesOnly);
super.setRecurseFilter(recurseFilter);
}
@Override
public void setLeavesOnly(boolean leavesOnly) {
throw MESSAGES.preconfiguredAttributesAreImmutable();
}
@Override
public void setIncludeRoot(boolean includeRoot) {
throw MESSAGES.preconfiguredAttributesAreImmutable();
}
@Override
public void setRecurseFilter(VirtualFileFilter filter) {
throw MESSAGES.preconfiguredAttributesAreImmutable();
}
@Override
public void setIgnoreErrors(boolean ignoreErrors) {
throw MESSAGES.preconfiguredAttributesAreImmutable();
}
@Override
public void setIncludeHidden(boolean includeHidden) {
throw MESSAGES.preconfiguredAttributesAreImmutable();
}
}
}