org.apache.directory.scim.ldap.LdapSchemaMapper.java Source code

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Here is the source code for org.apache.directory.scim.ldap.LdapSchemaMapper.java

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/*
 *   Licensed to the Apache Software Foundation (ASF) under one
 *   or more contributor license agreements.  See the NOTICE file
 *   distributed with this work for additional information
 *   regarding copyright ownership.  The ASF licenses this file
 *   to you 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.apache.directory.scim.ldap;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.apache.directory.api.ldap.model.exception.LdapException;
import org.apache.directory.api.ldap.model.schema.SchemaManager;
import org.apache.directory.ldap.client.api.LdapConnection;
import org.apache.directory.scim.SchemaMapper;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * TODO LdapSchemaMapper.
 *
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 */
public class LdapSchemaMapper implements SchemaMapper {
    private SchemaManager ldapSchema;

    private static final Logger LOG = LoggerFactory.getLogger(LdapSchemaMapper.class);

    public LdapSchemaMapper(LdapConnection connection) {
        try {
            connection.loadSchema();
        } catch (LdapException e) {
            LOG.debug("Failed to load schema from the server", e);
            LOG.info("Could not load schema from the LDAP server, disabling schema checks");
        }

        ldapSchema = connection.getSchemaManager();
    }

    public void loadMappings() {
        InputStream in = this.getClass().getResourceAsStream("escimo-ldap-mapping.xml");
        loadMappings(in);
    }

    public void loadMappings(InputStream in) {
        if (in == null) {
            throw new IllegalArgumentException("Mapping file inputstream cannot be null");
        }

        BufferedReader r = new BufferedReader(new InputStreamReader(in));

        try {
            StringBuilder sb = new StringBuilder();
            String s = null;

            while ((s = r.readLine()) != null) {
                sb.append(s).append("\n");
            }

            Document doc = DocumentHelper.parseText(sb.toString());

            // the entities element
            Element root = doc.getRootElement();
            if (root.elements().isEmpty()) {
                throw new IllegalStateException("Invalid schema mapping file");
            }
        } catch (Exception e) {
            LOG.warn("Failed to load the schema mappings", e);
            throw new RuntimeException(e);
        } finally {
            if (r != null) {
                try {
                    r.close();
                } catch (IOException e) {
                    LOG.warn("Failed to close the inputstream of the schema mapping file", e);
                }
            }
        }
    }

}