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Java example source code file (PropertyManager.java)

This example Java source code file (PropertyManager.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

boolean, context_reader, context_writer, hashmap, object, security_manager, stax_entities, stax_notations, staxentityresolverwrapper, string, string_interning, util, xml_security_property_manager, xmlsecuritymanager, xmlsecuritypropertymanager

The PropertyManager.java Java example source code

/*
 * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.org.apache.xerces.internal.impl;

import com.sun.org.apache.xerces.internal.utils.XMLSecurityManager;
import com.sun.org.apache.xerces.internal.utils.XMLSecurityPropertyManager;
import com.sun.xml.internal.stream.StaxEntityResolverWrapper;
import java.util.HashMap;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLResolver;

/**
 *  This class manages different properties related to Stax specification and its implementation.
 * This class constructor also takes itself (PropertyManager object) as parameter and initializes the
 * object with the property taken from the object passed.
 *
 * @author  Neeraj Bajaj, neeraj.bajaj@sun.com
 * @author K.Venugopal@sun.com
 * @author Sunitha Reddy, sunitha.reddy@sun.com
 */

public class PropertyManager {


    public static final String STAX_NOTATIONS = "javax.xml.stream.notations";
    public static final String STAX_ENTITIES = "javax.xml.stream.entities";

    private static final String STRING_INTERNING = "http://xml.org/sax/features/string-interning";

    /** Property identifier: Security manager. */
    private static final String SECURITY_MANAGER = Constants.SECURITY_MANAGER;

    /** Property identifier: Security property manager. */
    private static final String XML_SECURITY_PROPERTY_MANAGER =
            Constants.XML_SECURITY_PROPERTY_MANAGER;

    HashMap supportedProps = new HashMap();

    private XMLSecurityManager fSecurityManager;
    private XMLSecurityPropertyManager fSecurityPropertyMgr;

    public static final int CONTEXT_READER = 1;
    public static final int CONTEXT_WRITER = 2;

    /** Creates a new instance of PropertyManager */
    public PropertyManager(int context) {
        switch(context){
            case CONTEXT_READER:{
                initConfigurableReaderProperties();
                break;
            }
            case CONTEXT_WRITER:{
                initWriterProps();
                break;
            }
        }
    }

    /**
     * Initialize this object with the properties taken from passed PropertyManager object.
     */
    public PropertyManager(PropertyManager propertyManager){

        HashMap properties = propertyManager.getProperties();
        supportedProps.putAll(properties);
        fSecurityManager = (XMLSecurityManager)getProperty(SECURITY_MANAGER);
        fSecurityPropertyMgr = (XMLSecurityPropertyManager)getProperty(XML_SECURITY_PROPERTY_MANAGER);
    }

    private HashMap getProperties(){
        return supportedProps ;
    }


    /**
     * Important point:
     * 1. We are not exposing Xerces namespace property. Application should configure namespace through
     * Stax specific property.
     *
     */
    private void initConfigurableReaderProperties(){
        //spec default values
        supportedProps.put(XMLInputFactory.IS_NAMESPACE_AWARE, Boolean.TRUE);
        supportedProps.put(XMLInputFactory.IS_VALIDATING, Boolean.FALSE);
        supportedProps.put(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES, Boolean.TRUE);
        supportedProps.put(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES, Boolean.TRUE);
        supportedProps.put(XMLInputFactory.IS_COALESCING, Boolean.FALSE);
        supportedProps.put(XMLInputFactory.SUPPORT_DTD, Boolean.TRUE);
        supportedProps.put(XMLInputFactory.REPORTER, null);
        supportedProps.put(XMLInputFactory.RESOLVER, null);
        supportedProps.put(XMLInputFactory.ALLOCATOR, null);
        supportedProps.put(STAX_NOTATIONS,null );

        //zephyr (implementation) specific properties which can be set by the application.
        //interning is always done
        supportedProps.put(Constants.SAX_FEATURE_PREFIX + Constants.STRING_INTERNING_FEATURE , new Boolean(true));
        //recognizing java encoding names by default
        supportedProps.put(Constants.XERCES_FEATURE_PREFIX + Constants.ALLOW_JAVA_ENCODINGS_FEATURE,  new Boolean(true)) ;
        //in stax mode, namespace declarations are not added as attributes
        supportedProps.put(Constants.ADD_NAMESPACE_DECL_AS_ATTRIBUTE ,  Boolean.FALSE) ;
        supportedProps.put(Constants.READER_IN_DEFINED_STATE, new Boolean(true));
        supportedProps.put(Constants.REUSE_INSTANCE, new Boolean(true));
        supportedProps.put(Constants.ZEPHYR_PROPERTY_PREFIX + Constants.STAX_REPORT_CDATA_EVENT , new Boolean(false));
        supportedProps.put(Constants.ZEPHYR_PROPERTY_PREFIX + Constants.IGNORE_EXTERNAL_DTD, Boolean.FALSE);
        supportedProps.put(Constants.XERCES_FEATURE_PREFIX + Constants.WARN_ON_DUPLICATE_ATTDEF_FEATURE, new Boolean(false));
        supportedProps.put(Constants.XERCES_FEATURE_PREFIX + Constants.WARN_ON_DUPLICATE_ENTITYDEF_FEATURE, new Boolean(false));
        supportedProps.put(Constants.XERCES_FEATURE_PREFIX + Constants.WARN_ON_UNDECLARED_ELEMDEF_FEATURE, new Boolean(false));

        fSecurityManager = new XMLSecurityManager(true);
        supportedProps.put(SECURITY_MANAGER, fSecurityManager);
        fSecurityPropertyMgr = new XMLSecurityPropertyManager();
        supportedProps.put(XML_SECURITY_PROPERTY_MANAGER, fSecurityPropertyMgr);
    }

    private void initWriterProps(){
        supportedProps.put(XMLOutputFactory.IS_REPAIRING_NAMESPACES , Boolean.FALSE);
        //default value of escaping characters is 'true'
        supportedProps.put(Constants.ESCAPE_CHARACTERS , Boolean.TRUE);
        supportedProps.put(Constants.REUSE_INSTANCE, new Boolean(true));
    }

    /**
     * public void reset(){
     * supportedProps.clear() ;
     * }
     */
    public boolean containsProperty(String property){
        return supportedProps.containsKey(property) ||
                (fSecurityManager != null && fSecurityManager.getIndex(property) > -1) ||
                (fSecurityPropertyMgr!=null && fSecurityPropertyMgr.getIndex(property) > -1) ;
    }

    public Object getProperty(String property){
        return supportedProps.get(property);
    }

    public void setProperty(String property, Object value){
        String equivalentProperty = null ;
        if(property == XMLInputFactory.IS_NAMESPACE_AWARE || property.equals(XMLInputFactory.IS_NAMESPACE_AWARE)){
            equivalentProperty = Constants.XERCES_FEATURE_PREFIX + Constants.NAMESPACES_FEATURE ;
        }
        else if(property == XMLInputFactory.IS_VALIDATING || property.equals(XMLInputFactory.IS_VALIDATING)){
            if( (value instanceof Boolean) && ((Boolean)value).booleanValue()){
                throw new java.lang.IllegalArgumentException("true value of isValidating not supported") ;
            }
        }
        else if(property == STRING_INTERNING || property.equals(STRING_INTERNING)){
            if( (value instanceof Boolean) && !((Boolean)value).booleanValue()){
                throw new java.lang.IllegalArgumentException("false value of " + STRING_INTERNING + "feature is not supported") ;
            }
        }
        else if(property == XMLInputFactory.RESOLVER || property.equals(XMLInputFactory.RESOLVER)){
            //add internal stax property
            supportedProps.put( Constants.XERCES_PROPERTY_PREFIX + Constants.STAX_ENTITY_RESOLVER_PROPERTY , new StaxEntityResolverWrapper((XMLResolver)value)) ;
        }

        /**
         * It's possible for users to set a security manager through the interface.
         * If it's the old SecurityManager, convert it to the new XMLSecurityManager
         */
        if (property.equals(Constants.SECURITY_MANAGER)) {
            fSecurityManager = XMLSecurityManager.convert(value, fSecurityManager);
            supportedProps.put(Constants.SECURITY_MANAGER, fSecurityManager);
            return;
        }
        if (property.equals(Constants.XML_SECURITY_PROPERTY_MANAGER)) {
            if (value == null) {
                fSecurityPropertyMgr = new XMLSecurityPropertyManager();
            } else {
                fSecurityPropertyMgr = (XMLSecurityPropertyManager)value;
            }
            supportedProps.put(Constants.XML_SECURITY_PROPERTY_MANAGER, fSecurityPropertyMgr);
            return;
        }

        //check if the property is managed by security manager
        if (fSecurityManager == null ||
                !fSecurityManager.setLimit(property, XMLSecurityManager.State.APIPROPERTY, value)) {
            //check if the property is managed by security property manager
            if (fSecurityPropertyMgr == null ||
                    !fSecurityPropertyMgr.setValue(property, XMLSecurityPropertyManager.State.APIPROPERTY, value)) {
                //fall back to the existing property manager
                supportedProps.put(property, value);
            }
        }

        if(equivalentProperty != null){
            supportedProps.put(equivalentProperty, value ) ;
        }
    }

    public String toString(){
        return supportedProps.toString();
    }

}//PropertyManager

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