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/*
 * ModeShape (http://www.modeshape.org)
 *
 * 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.modeshape.jcr.value;

import org.modeshape.common.annotation.ThreadSafe;
import org.modeshape.common.text.TextDecoder;

/**
 * A factory for creating {@link Path paths}. This interface extends the {@link ValueFactory} generic interface and adds specific
 * methods for creating paths (and relative paths) from a series of names, segments, or combinations.
 */
@ThreadSafe
public interface PathFactory extends ValueFactory {

    @Override
    PathFactory with( ValueFactories valueFactories );

    /**
     * Create an absolute root path. Subsequent calls will always return the same instance.
     * 
     * @return the new path
     */
    Path createRootPath();

    /**
     * Create an absolute path with the supplied segment names, in order. If no segments are provided, the result will be the root
     * path.
     * 
     * @param segmentNames the names of the segments
     * @return the new path
     * @throws IllegalArgumentException if at least one segment name is provided and if any of the supplied segment names are null
     */
    Path createAbsolutePath( Name... segmentNames );

    /**
     * Create an absolute path with the supplied segments, in order. If no segments are provided, the result will be the root
     * path.
     * 
     * @param segments the segments
     * @return the new path
     * @throws IllegalArgumentException if at least one segment is provided and if any of the supplied segments are null
     */
    Path createAbsolutePath( Path.Segment... segments );

    /**
     * Create an absolute path with the supplied segments, in order. If no segments are provided, the result will be the root
     * path.
     * 
     * @param segments the segments
     * @return the new path
     * @throws IllegalArgumentException if at least one segment is provided and if any of the supplied segments are null
     */
    Path createAbsolutePath( Iterable segments );

    /**
     * Create an empty relative path (i.e., equivalent to {@link #createRelativePath(Path.Segment...) createRelativePath}(
     * {@link Path#SELF_SEGMENT})). Subsequent calls will always return the same instance.
     * 
     * @return the new path
     */
    Path createRelativePath();

    /**
     * Create a relative path with the supplied segment names, in order. If no segments are provided, the result will be the root
     * path.
     * 
     * @param segmentNames the names of the segments
     * @return the new path
     * @throws IllegalArgumentException if at least one segment name is provided and if any of the supplied segment names are null
     */
    Path createRelativePath( Name... segmentNames );

    /**
     * Create a relative path with the supplied segments, in order. If no segments are provided, the result will be the root path.
     * 
     * @param segments the segments
     * @return the new path
     * @throws IllegalArgumentException if at least one segment is provided and if any of the supplied segments are null
     */
    Path createRelativePath( Path.Segment... segments );

    /**
     * Create a relative path with the supplied segments, in order. If no segments are provided, the result will be the root path.
     * 
     * @param segments the segments
     * @return the new path
     * @throws IllegalArgumentException if at least one segment is provided and if any of the supplied segments are null
     */
    Path createRelativePath( Iterable segments );

    /**
     * Create a path by appending the supplied relative path to the supplied parent path. The resulting path will be
     * {@link Path#isAbsolute() absolute} if the supplied parent path is absolute.
     * 
     * @param parentPath the path that is to provide the basis for the new path
     * @param childPath the path that should be appended to the parent path
     * @return the new path
     * @throws IllegalArgumentException if the parent path reference or the child path reference is null
     */
    Path create( Path parentPath,
                 Path childPath );

    /**
     * Create a path by appending the supplied names to the parent path.
     * 
     * @param parentPath the path that is to provide the basis for the new path
     * @param segmentName the name of the segment to be appended to the parent path
     * @param index the index for the new segment
     * @return the new path
     * @throws IllegalArgumentException if the parent path reference or the segment name is null, or if the index is invalid
     */
    Path create( Path parentPath,
                 Name segmentName,
                 int index );

    /**
     * Create a path by appending the supplied names to the parent path.
     * 
     * @param parentPath the path that is to provide the basis for the new path
     * @param segmentName the name of the segment to be appended to the parent path
     * @param index the index for the new segment
     * @return the new path
     * @throws IllegalArgumentException if the parent path reference or the segment name is null, or if the index is invalid
     */
    Path create( Path parentPath,
                 String segmentName,
                 int index );

    /**
     * Create a path by appending the supplied names to the parent path. If no names are appended, the parent path is returned.
     * 
     * @param parentPath the path that is to provide the basis for the new path
     * @param segmentNames the names of the segments that are to be appended, in order, to the parent path
     * @return the new path
     * @throws IllegalArgumentException if the parent path reference is null, or if at least one segment name is provided and if
     *         any of the supplied segment names are null
     */
    Path create( Path parentPath,
                 Name... segmentNames );

    /**
     * Create a path by appending the supplied names to the parent path. If no names are appended, the parent path is returned.
     * 
     * @param parentPath the path that is to provide the basis for the new path
     * @param segments the segments that are to be appended, in order, to the parent path
     * @return the new path
     * @throws IllegalArgumentException if the parent path reference is null, or if at least one segment name is provided and if
     *         any of the supplied segment names are null
     */
    Path create( Path parentPath,
                 Path.Segment... segments );

    /**
     * Create a path by appending the supplied names to the parent path. If no names are appended, the parent path is returned.
     * 
     * @param parentPath the path that is to provide the basis for the new path
     * @param segments the segments that are to be appended, in order, to the parent path
     * @return the new path
     * @throws IllegalArgumentException if the parent path reference is null, or if at least one segment name is provided and if
     *         any of the supplied segment names are null
     */
    Path create( Path parentPath,
                 Iterable segments );

    /**
     * Create a path by appending the supplied names to the parent path.
     * 
     * @param parentPath the path that is to provide the basis for the new path
     * @param subpath the subpath to be appended to the parent path, which must be in the form of a relative path
     * @return the new path
     * @throws IllegalArgumentException if the parent path reference or the segment name is null, or if the index is invalid
     */
    Path create( Path parentPath,
                 String subpath );

    /**
     * Create a path segment given the supplied segment name. The supplied string may contain a same-name-sibling index in the
     * form of "[n]" at the end of the name, where n is a positive integer. Note that the
     * same-name-sibling index is 1-based, not zero-based.
     * 
     * @param segmentName the name of the segment
     * @return the segment
     * @throws IllegalArgumentException if the segment name reference is null or the value could not be created from
     *         the supplied string
     * @throws ValueFormatException if the same-name-sibling index is not an integer, or if the supplied string is not a valid
     *         segment name
     */
    Path.Segment createSegment( String segmentName );

    /**
     * Create a path segment given the supplied segment name. The supplied string may contain a same-name-sibling index in the
     * form of "[n]" at the end of the name, where n is a positive integer. Note that the
     * same-name-sibling index is 1-based, not zero-based.
     * 
     * @param segmentName the name of the segment
     * @param decoder the decoder that should be used to decode the qualified name
     * @return the segment
     * @throws IllegalArgumentException if the segment name reference is null or the value could not be created from
     *         the supplied string
     * @throws ValueFormatException if the same-name-sibling index is not an integer, or if the supplied string is not a valid
     *         segment name
     */
    Path.Segment createSegment( String segmentName,
                                TextDecoder decoder );

    /**
     * Create a path segment given the supplied segment name and index.
     * 
     * @param segmentName the name of the new segment
     * @param index the index of the new segment
     * @return the segment
     * @throws IllegalArgumentException if the segment name reference is null or if the index is invalid
     * @throws ValueFormatException if the supplied string is not a valid segment name
     */
    Path.Segment createSegment( String segmentName,
                                int index );

    /**
     * Create a path segment given the supplied segment name. The resulting segment will have no index.
     * 
     * @param segmentName the name of the segment
     * @return the segment
     * @throws IllegalArgumentException if the segment name reference is null
     */
    Path.Segment createSegment( Name segmentName );

    /**
     * Create a path segment given the supplied segment name and index.
     * 
     * @param segmentName the name of the new segment
     * @param index the index of the new segment
     * @return the segment
     * @throws IllegalArgumentException if the segment name reference is null or if the index is invalid
     */
    Path.Segment createSegment( Name segmentName,
                                int index );

}




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