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CM-690 virtualization
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@117474 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Bogdan Horje
@@ -0,0 +1,237 @@
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/*
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* Copyright (C) 2005-2015 Alfresco Software Limited.
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*
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* This file is part of Alfresco
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see http://www.gnu.org/licenses/.
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*/
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package org.alfresco.repo.virtual.config;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.Map;
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import org.alfresco.error.AlfrescoRuntimeException;
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import org.alfresco.service.cmr.repository.NodeRef;
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/**
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* A String name or qname path expression that resolves to a {@link NodeRef}.<br>
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* The given name or qname path is relative to a {@link NodeRefContext}
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* repository location. The default context is set to
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* {@link CompanyHomeContext#COMPANY_HOME_CONTEXT_NAME}. Other contexts can be
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* set using their name with {@link #setContext(String)}.<br>
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* The set path is automatically detected and checked for consistency.
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*/
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public class NodeRefPathExpression implements NodeRefExpression
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{
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private static final String NAMESPACE_DELIMITER = ":";
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private static final String PATH_DELIMITER = "/";
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private Map<String, NodeRefContext> contexts = new HashMap<String, NodeRefContext>();
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private NodeRefResolver resolver;
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private String context = CompanyHomeContext.COMPANY_HOME_CONTEXT_NAME;
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private String[] createNamePath;
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private String[] namePath;
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private String[] qNamePath;
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public NodeRefPathExpression(NodeRefResolver resolver, Map<String, NodeRefContext> contexts)
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{
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this(resolver,
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contexts,
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CompanyHomeContext.COMPANY_HOME_CONTEXT_NAME,
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null);
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}
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public NodeRefPathExpression(NodeRefResolver resolver, Map<String, NodeRefContext> contexts, String context,
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String path)
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{
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super();
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this.resolver = resolver;
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this.contexts = contexts;
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this.context = context;
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setPath(path);
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}
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public void setContext(String context)
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{
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this.context = context;
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}
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public void setCreatedPathName(String createNamePath)
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{
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this.createNamePath = createNamePath.split(",");
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}
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/**
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* Path setter.<br>
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* The type of path is automatically detected and checked for consistency.
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*
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* @param path the string path to be resolved later
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* @throws AlfrescoRuntimeException if the given path is inconsistent (i.e.
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* a combination of qnames and names)
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*/
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public void setPath(String path) throws AlfrescoRuntimeException
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{
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String[] pathElements = splitAndNormalizePath(path);
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if (isQNamePath(pathElements))
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{
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this.qNamePath = pathElements;
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}
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else if (isNamePath(pathElements))
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{
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this.namePath = pathElements;
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}
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else
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{
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throw new AlfrescoRuntimeException("Invalid path format : " + path);
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}
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}
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private boolean isQNamePath(String[] pathElements)
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{
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for (int i = 0; i < pathElements.length; i++)
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{
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if (!pathElements[i].contains(NAMESPACE_DELIMITER))
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{
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return false;
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}
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}
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return true;
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}
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private boolean isNamePath(String[] pathElements)
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{
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for (int i = 0; i < pathElements.length; i++)
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{
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if (pathElements[i].contains(NAMESPACE_DELIMITER))
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{
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return false;
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}
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}
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return true;
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}
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public static String[] splitAndNormalizePath(String path)
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{
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if (path == null || path.trim().length() == 0)
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{
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return new String[] {};
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}
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String[] splitPath = path.split(PATH_DELIMITER);
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// remove blank entries resulted from misplaced delimiters
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int shift = 0;
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for (int i = 0; i < splitPath.length; i++)
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{
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if (splitPath[i] == null || splitPath[i].trim().isEmpty())
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{
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shift++;
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}
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else if (shift > 0)
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{
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splitPath[i - shift] = splitPath[i];
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}
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}
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if (shift > 0)
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{
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String[] noBlanksSplitPath = new String[splitPath.length - shift];
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if (noBlanksSplitPath.length > 0)
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{
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System.arraycopy(splitPath,
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0,
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noBlanksSplitPath,
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0,
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noBlanksSplitPath.length);
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}
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splitPath = noBlanksSplitPath;
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}
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return splitPath;
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}
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@Override
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public NodeRef resolve()
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{
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NodeRefContext theContext = contexts.get(context);
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if (this.namePath != null)
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{
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return theContext.resolveNamePath(this.namePath,
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resolver);
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}
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else
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{
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return theContext.resolveQNamePath(this.qNamePath,
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resolver);
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}
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}
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@Override
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public NodeRef resolve(boolean createIfNotFound)
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{
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NodeRef nodeRef = resolve();
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if (nodeRef == null && createIfNotFound)
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{
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NodeRefContext theContext = contexts.get(context);
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if (this.namePath != null)
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{
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return theContext.createNamePath(this.namePath,
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resolver);
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}
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else
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{
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return theContext.createQNamePath(this.qNamePath,
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this.createNamePath,
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resolver);
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}
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}
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return nodeRef;
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}
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@Override
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public String toString()
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{
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StringBuilder pathString = new StringBuilder();
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pathString.append("<");
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pathString.append(this.context);
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pathString.append(">/");
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if (this.namePath != null)
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{
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pathString.append(Arrays.toString(this.namePath));
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}
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if (this.qNamePath != null)
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{
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pathString.append(Arrays.toString(this.qNamePath));
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}
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return "<null path expression>";
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}
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}
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