com.marklogic.client.impl.QueryOptionsTransformInjectNS Maven / Gradle / Ivy

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/*
 * Copyright 2012-2016 MarkLogic Corporation
 *
 * 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 com.marklogic.client.impl;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.XMLFilterImpl;

import javax.xml.XMLConstants;
import java.util.HashMap;
import java.util.Vector;

public class QueryOptionsTransformInjectNS extends XMLFilterImpl {
    private static final String SEARCH_NS = "http://marklogic.com/appservices/search";
    private boolean inBinding = false;
    private HashMap nsmap = new HashMap ();

    public QueryOptionsTransformInjectNS() {
    }

    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        if (SEARCH_NS.equals(uri)) {
            if ("namespace-bindings".equals(localName)) {
                inBinding = true;
                nsmap.clear();
            }

            if (inBinding && "binding".equals(localName)) {
                nsmap.put(attributes.getValue("prefix"), attributes.getValue("namespace-uri"));
            }

            if (inBinding) {
                return;
            }

            BindingAttributes attrs = new BindingAttributes(attributes);
            if ("path-index".equals(localName) || "searchable-expression".equals(localName)) {
                String xmlns = null;
                for (String pfx : nsmap.keySet()) {
                    xmlns = "xmlns";
                    if (!"".equals(pfx)) {
                        xmlns += ":" + pfx;
                    }
                    attrs.addAttribute(XMLConstants.XMLNS_ATTRIBUTE_NS_URI, xmlns, nsmap.get(pfx));
                }
            }

            super.startElement(uri, localName, qName, attrs);
        } else {
            super.startElement(uri, localName, qName, attributes);
        }
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {
        if (SEARCH_NS.equals(uri) && "namespace-bindings".equals(localName)) {
            inBinding = false;
            return;
        }

        if (inBinding) {
            return;
        }

        super.endElement(uri, localName, qName);
    }

    @Override
    public void characters(char[] chars, int i, int i1) throws SAXException {
        if (inBinding) {
            return;
        }
        super.characters(chars, i, i1);
    }

    private static class BindingAttributes implements Attributes {
        private Vector names = new Vector ();
        private Vector values = new Vector ();
        private Vector nsuris = new Vector ();

        @SuppressWarnings("unused")
        public BindingAttributes() {
        }

        public BindingAttributes(Attributes attributes) {
            if (attributes == null) {
                return;
            }

            for (int pos = 0; pos < attributes.getLength(); pos++) {
                names.add(attributes.getQName(pos));
                values.add(attributes.getValue(pos));
                nsuris.add(attributes.getURI(pos));
            }
        }

        public void addAttribute(String uri, String qName, String value) {
            if (getIndex(qName) < 0) {
                nsuris.add(uri);
                names.add(qName);
                values.add(value);
            }
        }

        @Override
        public int getLength() {
            return names.size();
        }

        @Override
        public String getURI(int i) {
            return nsuris.get(i);
        }

        @Override
        public String getLocalName(int i) {
            String name = names.get(i);
            if (name.contains(":")) {
                name = name.substring(name.indexOf(":"));
            }
            return name;
        }

        @Override
        public String getQName(int i) {
            return names.get(i);
        }

        @Override
        public String getType(int i) {
            return "CDATA";
        }

        @Override
        public String getValue(int i) {
            return values.get(i);
        }

        @Override
        public int getIndex(String uri, String localName) {
            for (int i = 0; i < names.size(); i++) {
                if (localName.equals(getLocalName(i)) && uri.equals(getURI(i))) {
                    return i;
                }
            }

            return -1;
        }

        @Override
        public int getIndex(String qName) {
            for (int i = 0; i < names.size(); i++) {
                if (qName.equals(names.get(i))) {
                    return i;
                }
            }
            return -1;
        }

        @Override
        public String getType(String uri, String localName) {
            if (getIndex(uri, localName) >= 0) {
                return "CDATA";
            } else {
                return null;
            }
        }

        @Override
        public String getType(String qName) {
            if (getIndex(qName) >= 0) {
                return "CDATA";
            } else {
                return null;
            }
        }

        @Override
        public String getValue(String uri, String localName) {
            int pos = getIndex(uri, localName);
            if (pos >= 0) {
                return getValue(pos);
            } else {
                return null;
            }
        }

        @Override
        public String getValue(String qName) {
            int pos = getIndex(qName);
            if (pos >= 0) {
                return getValue(pos);
            } else {
                return null;
            }
        }
    }
}