NewDalSearchStrategy.java

/*
Copyright [2013-2014] eBay Software Foundation

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.
*/


/**
 * 
 */
/* 
Copyright 2012 eBay Software Foundation 

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.ebay.cloud.cms.dal.persistence.flatten.impl;

import java.util.Collection;

import com.ebay.cloud.cms.dal.entity.AbstractEntityIDHelper;
import com.ebay.cloud.cms.dal.search.ISearchField;
import com.ebay.cloud.cms.dal.search.ISearchStrategy;
import com.ebay.cloud.cms.dal.search.impl.field.AbstractSearchField;
import com.ebay.cloud.cms.metadata.model.IndexInfo;
import com.ebay.cloud.cms.metadata.model.InternalFieldEnum;
import com.ebay.cloud.cms.metadata.model.MetaClass;
import com.ebay.cloud.cms.metadata.model.MetaField;
import com.ebay.cloud.cms.metadata.model.MetaField.DataTypeEnum;
import com.ebay.cloud.cms.metadata.model.MetaField.FieldProperty;
import com.ebay.cloud.cms.metadata.model.MetaRelationship;

/**
 * @author liasu
 * 
 */
public class NewDalSearchStrategy implements ISearchStrategy {
    private static final NewDalSearchStrategy INSTANCE = new NewDalSearchStrategy();

    public static NewDalSearchStrategy getInstance() {
        return INSTANCE;
    }

    public String getSearchFieldValueName(AbstractSearchField field){
        return field.getRootField().getFlattenValueDbName();
    }

    public String getMetaFieldValueName(MetaRelationship relationship) {
        return relationship.getFlattenValueDbName();
    }

    @Override
    public String getFieldValueName(MetaField field) {
        return field.getFlattenValueDbName();
    }

    @Override
    public String getFieldPropertyName(MetaField field, FieldProperty property) {
        return field.getFlattenPropertyValueDbName(property);
    }

    @Override
    public String getFieldInnerPropertyName(MetaField field, String innerField) {
        return field.getFlattenValueDbName() + "." + innerField;
    }

	@Override
	public boolean isIndexUsable(ISearchField field, MetaClass metaClass) {
		Collection<IndexInfo> indexes = metaClass.getIndexesOnField(field
				.getFieldName());
		for (IndexInfo index : indexes) {
			String firstKey = index.getKeyList().get(0);
			MetaField metaField = metaClass.getFieldByName(firstKey);

			String physicalKeyName = getFieldValueName(metaField);
			if (metaField.getDataType().equals(DataTypeEnum.RELATIONSHIP)) {
				physicalKeyName = metaField.getFlattenValueDbName() + AbstractEntityIDHelper.DOT + InternalFieldEnum.ID.getDbName();
			}
			if (physicalKeyName.equals(field.getFullDbName())) {
				return true;
			}
		}
		return false;
	}

}