org.apache.lucene.store.jdbc.handler.MarkDeleteFileEntryHandler.java Source code

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Here is the source code for org.apache.lucene.store.jdbc.handler.MarkDeleteFileEntryHandler.java

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/*
 * Copyright 2004-2009 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.apache.lucene.store.jdbc.handler;

import java.io.IOException;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Iterator;
import java.util.List;

import org.springframework.jdbc.core.BatchPreparedStatementSetter;
import org.springframework.jdbc.core.PreparedStatementSetter;

/**
 * Does not delete entries from the database, just marks them for deletion by updating the deleted
 * column to <code>true</code>.
 * <p/>
 * To really delete file entries, use {@link org.apache.lucene.store.jdbc.JdbcDirectory#deleteMarkDeleted()}
 * or {@link org.apache.lucene.store.jdbc.JdbcDirectory#deleteMarkDeleted(long)}.
 *
 * @author kimchy
 */
public class MarkDeleteFileEntryHandler extends AbstractFileEntryHandler {

    public void deleteFile(final String name) throws IOException {
        jdbcTemplate.update(table.sqlMarkDeleteByName(), new PreparedStatementSetter() {
            @Override
            public void setValues(PreparedStatement ps) throws SQLException {
                ps.setFetchSize(1);
                ps.setBoolean(1, true);
                ps.setString(2, name);
            }
        });
    }

    public List deleteFiles(final List names) throws IOException {
        jdbcTemplate.batchUpdate(table.sqlMarkDeleteByName(), new BatchPreparedStatementSetter() {
            @Override
            public void setValues(PreparedStatement ps, int i) throws SQLException {
                ps.setFetchSize(1);
                ps.setBoolean(1, true);
                ps.setString(2, (String) names.get(i));
                ps.addBatch();
            }

            @Override
            public int getBatchSize() {
                return names.size();
            }
        });
        return null;
    }
}