org.onecmdb.core.utils.xpath.commands.AbstractPathCommand.java Source code

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Here is the source code for org.onecmdb.core.utils.xpath.commands.AbstractPathCommand.java

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/*
 * Lokomo OneCMDB - An Open Source Software for Configuration
 * Management of Datacenter Resources
 *
 * Copyright (C) 2006 Lokomo Systems AB
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 * 
 * Lokomo Systems AB can be contacted via e-mail: info@lokomo.com or via
 * paper mail: Lokomo Systems AB, Svrdvgen 27, SE-182 33
 * Danderyd, Sweden.
 *
 */
package org.onecmdb.core.utils.xpath.commands;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.jxpath.Pointer;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.onecmdb.core.IOneCmdbContext;
import org.onecmdb.core.ISession;
import org.onecmdb.core.utils.xpath.OneCMDBFactory;
import org.onecmdb.core.utils.xpath.model.OneCMDBContext;

/**
 * Abstract class for all Path Commands
 * Common class to create JXPath Contexts.
 *
 */
public class AbstractPathCommand {
    // Arguments to AbstractPathCommand.
    // Subclasses might need more arguments.
    private String path;
    private String auth;

    private IOneCmdbContext oneCmdbContext;
    private JXPathContext xPathContext;

    protected Map<String, Object> context = new HashMap<String, Object>();

    protected Log log = LogFactory.getLog(this.getClass());

    public AbstractPathCommand(IOneCmdbContext context) {
        this.oneCmdbContext = context;
    }

    public String getAuth() {
        return auth;
    }

    public void setAuth(String auth) {
        this.auth = auth;
    }

    public String getPath() {
        return path;
    }

    public Map<String, Object> getDataContext() {
        return (this.context);
    }

    public void setPath(String path) {
        this.path = path;
        if (this.path.startsWith("'")) {
            this.path = path.substring(1);
        }
        if (this.path.endsWith("'")) {
            this.path = this.path.substring(0, this.path.length() - 1);
        }
    }

    public ISession getCurrentSession() {
        if (this.auth == null) {
            return (null);
        }
        ISession session = oneCmdbContext.getSession(this.auth);
        getDataContext().put("session", session);
        return (session);
    }

    public JXPathContext getXPathContext() {

        if (this.xPathContext == null) {
            log.debug("Create new OneCMDbContext");
            ISession session = this.oneCmdbContext.getSession(getAuth());
            if (session == null) {
                throw new SecurityException("No Session found! Try to do auth() first!");
            }
            /*
            IModelService mSvc = (IModelService)session.getService(IModelService.class);
            this.xPathContext = JXPathContext.newContext(new OneCMDBContext(new OneCMDBContextBeanProvider(mSvc)));
            */
            this.context.put("session", session);
            this.xPathContext = JXPathContext.newContext(new OneCMDBContext(this.context, session));
            this.xPathContext.setFactory(new OneCMDBFactory());
        }
        return (this.xPathContext);
    }

    public Iterator<Pointer> getPathPointers() {
        JXPathContext context = getXPathContext();
        return ((Iterator<Pointer>) context.iteratePointers(getPath()));
    }

    public Iterator<Pointer> getRelativePointers(Pointer p, String outputAttribute) {
        JXPathContext relContext = getXPathContext().getRelativeContext(p);
        return ((Iterator<Pointer>) relContext.iteratePointers(outputAttribute));
    }

    public JXPathContext getRelativeContext(Pointer p) {
        JXPathContext relContext = getXPathContext().getRelativeContext(p);
        return (relContext);
    }

}