/*
 * 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 de.unioninvestment.eai.portal.support.vaadin.filter;

import java.text.MessageFormat;

import com.vaadin.data.Container.Filter;
import com.vaadin.data.util.sqlcontainer.query.generator.StatementHelper;
import com.vaadin.data.util.sqlcontainer.query.generator.filter.FilterTranslator;
import com.vaadin.data.util.sqlcontainer.query.generator.filter.QueryBuilder;

/**
 * Ein Vaadin SQLContainer Filtertranslator für SQL-Where Filter.
 * 
 * @author markus.bonsch
 * 
 */
public class SQLFilterTranslator implements FilterTranslator {

	private static final long serialVersionUID = 1L;

	@Override
	public boolean translatesFilter(Filter filter) {
		return filter instanceof SQLFilter;
	}

	@Override
	public String getWhereStringForFilter(Filter filter, StatementHelper sh) {
		SQLFilter sqlFilter = (SQLFilter) filter;

		for (Object param : sqlFilter.getValues()) {
			sh.addParameterValue(param);
		}

		if (sqlFilter.getColumn() != null) {
			String columnName = QueryBuilder.quote(sqlFilter.getColumn());
			return MessageFormat.format("{0} {1}", columnName,
					sqlFilter.getWhereString());
		} else {
			return MessageFormat.format("({0})", sqlFilter.getWhereString());
		}
	}

}