SimpleElasticsearchPersistentEntity.java

/*
 * Copyright 2013 the original author or authors.
 *
 * 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.springframework.data.elasticsearch.core.mapping;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.expression.BeanFactoryAccessor;
import org.springframework.context.expression.BeanFactoryResolver;
import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.data.mapping.model.BasicPersistentEntity;
import org.springframework.data.mapping.model.MappingException;
import org.springframework.data.util.TypeInformation;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import org.springframework.util.Assert;

import java.util.Locale;

import static org.springframework.util.StringUtils.hasText;

/**
 * Elasticsearch specific {@link org.springframework.data.mapping.PersistentEntity} implementation holding
 *
 * @param <T>
 *
 * @author Rizwan Idrees
 * @author Mohsin Husen
 */
public class SimpleElasticsearchPersistentEntity<T> extends BasicPersistentEntity<T, ElasticsearchPersistentProperty> implements
        ElasticsearchPersistentEntity<T>, ApplicationContextAware {

    private final StandardEvaluationContext context;
    private String indexName;
    private String indexType;

    public SimpleElasticsearchPersistentEntity(TypeInformation<T> typeInformation) {
        super(typeInformation);
        this.context = new StandardEvaluationContext();
        Class<T> clazz = typeInformation.getType();
        if(clazz.isAnnotationPresent(Document.class)){
            Document document = clazz.getAnnotation(Document.class);
            Assert.hasText(document.indexName(), " Unknown indexName. Make sure the indexName is defined. e.g @Document(indexName=\"foo\")");
            this.indexName = typeInformation.getType().getAnnotation(Document.class).indexName();
            this.indexType = hasText(document.type())? document.type() : clazz.getSimpleName().toLowerCase(Locale.ENGLISH);
        }
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        context.addPropertyAccessor(new BeanFactoryAccessor());
        context.setBeanResolver(new BeanFactoryResolver(applicationContext));
        context.setRootObject(applicationContext);
    }

    @Override
    public String getIndexName() {
        return indexName;
    }

    @Override
    public String getIndexType() {
        return indexType;
    }

    @Override
    public void addPersistentProperty(ElasticsearchPersistentProperty property) {
        super.addPersistentProperty(property);
        if(property.isVersionProperty()){
            Assert.isTrue(property.getType() ==  Long.class, "Version property should be Long");
        }
    }
}