IndexField.java

/*
 * Copyright 2012 NGDATA nv
 *
 * 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 org.lilyproject.indexer.model.indexerconf;


import java.io.IOException;
import java.util.List;

import com.google.common.base.Predicate;
import org.lilyproject.repository.api.RepositoryException;
import org.lilyproject.repository.api.Scope;
import org.lilyproject.util.repo.VTaggedRecord;

public class IndexField implements MappingNode {

    private final NameTemplate nameTemplate;
    private final Value value;

    public IndexField(NameTemplate nameTemplate, Value value) {
        this.nameTemplate = nameTemplate;
        this.value = value;
    }

    public Value getValue() {
        return value;
    }

    public NameTemplate getName() {
        return nameTemplate;
    }

    @Override
    public boolean isIndexAffectedByUpdate(VTaggedRecord vtRecord, Scope scope) throws InterruptedException,
            RepositoryException {
        return vtRecord.getRecordEventHelper().getUpdatedFieldTypeIdsByScope()
                .get(scope).contains(value.getFieldDependency());
    }

    @Override
    public void visitAll(Predicate<MappingNode> predicate) {
        predicate.apply(this);
    }

    @Override
    public void collectIndexUpdate(IndexUpdateBuilder indexUpdateBuilder) throws InterruptedException, RepositoryException, IOException {
        // We must evaluate both name and values (even if there is no context record - to make sure
        // all dependencies are added.
        String formattedName = indexUpdateBuilder.evalIndexFieldName(nameTemplate);
        List<String> values = indexUpdateBuilder.eval(value);

        if (formattedName != null) {
            indexUpdateBuilder.addField(formattedName, values);
        }
    }

}