de.micromata.mgc.jpa.hibernatesearch.bridges.HistoryMasterClassBridge.java Source code

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Here is the source code for de.micromata.mgc.jpa.hibernatesearch.bridges.HistoryMasterClassBridge.java

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//
// Copyright (C) 2010-2016 Micromata GmbH
//
// 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 de.micromata.mgc.jpa.hibernatesearch.bridges;

import org.apache.commons.lang3.StringUtils;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.LongField;
import org.apache.lucene.document.StringField;
import org.hibernate.search.bridge.LuceneOptions;
import org.hibernate.search.bridge.MetadataProvidingFieldBridge;
import org.hibernate.search.bridge.spi.FieldMetadataBuilder;
import org.hibernate.search.bridge.spi.FieldType;

import de.micromata.genome.db.jpa.history.entities.HistoryMasterBaseDO;

/**
 * Stores the History table in hibernate search.
 * 
 * 
 * @author Roger Rene Kommer (r.kommer.extern@micromata.de)
 *
 */
public class HistoryMasterClassBridge implements MetadataProvidingFieldBridge {
    private static final org.apache.log4j.Logger log = org.apache.log4j.Logger
            .getLogger(HistoryMasterClassBridge.class);

    /**
     * Limit of Lucene.
     */
    private static final int MAX_FULLTEXT_FIELDLENGTH = 30000;

    @Override
    public void set(String name, Object value, Document document, LuceneOptions luceneOptions) {
        if (value == null) {
            log.error("Error in history class bridge: Object is null.");
            return;
        }
        HistoryMasterBaseDO<?, ?> hm = (HistoryMasterBaseDO<?, ?>) value;

        if (hm.getEntityId() != null) {
            Field field = new LongField("entityId", hm.getEntityId(), Field.Store.YES);
            document.add(field);
        } else {
            log.error("Error in history class bridge: entityId is null.");
        }
        if (hm.getEntityName() != null) {
            Field field = new StringField("entityName", hm.getEntityName(), TabAttrFieldBridge.DEFAULT_STORE);
            document.add(field);
        } else {
            log.error("Error in history class bridge: entityName is null.");
        }
        if (hm.getModifiedAt() != null) {
            Field field = new LongField("modifiedAt", hm.getModifiedAt().getTime(),
                    TabAttrFieldBridge.DEFAULT_STORE);
            document.add(field);
        } else {
            log.error("Error in history class bridge: modifiedAt is null.");
        }

        if (hm.getAttributeKeys() != null) {
            for (String key : hm.getAttributeKeys()) {
                String svalue = hm.getStringAttribute(key);
                if (StringUtils.isBlank(svalue) == true) {
                    log.debug("HistoryMaster class bridge: value of attribute key: " + key + " is null.");
                    continue;
                }
                if (StringUtils.endsWith(key, ":ov") == true) {
                    String indexv = svalue;
                    if (indexv.length() > MAX_FULLTEXT_FIELDLENGTH) {
                        indexv = indexv.substring(0, MAX_FULLTEXT_FIELDLENGTH);
                    }
                    Field field = new StringField("oldValue", indexv, TabAttrFieldBridge.DEFAULT_STORE);
                    document.add(field);
                }
            }
        } else {
            log.debug("HistoryMaster class bridge: attribute keys list is null.");
        }
    }

    @Override
    public void configureFieldMetadata(String name, FieldMetadataBuilder builder) {
        // does not have a effect on meta info?!?
        builder.field(name + "entityId", FieldType.LONG).field(name + "entityName", FieldType.STRING).sortable(true)
                .field(name + "modifiedAt", FieldType.LONG).sortable(true)
                //        .field("NEW_VALUE", FieldType.STRING)
                .field(name + "oldValue", FieldType.STRING).sortable(true);

    }

}