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BulkLoadExporterRetriever.java
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BulkLoadExporterRetriever.java
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/**
* Copyright 2011-2015 Asakusa Framework Team.
*
* 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.asakusafw.testdriver.bulkloader;
import java.io.IOException;
import java.sql.Connection;
import java.sql.SQLException;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.asakusafw.runtime.io.ModelOutput;
import com.asakusafw.testdriver.core.AbstractExporterRetriever;
import com.asakusafw.testdriver.core.DataModelDefinition;
import com.asakusafw.testdriver.core.DataModelSource;
import com.asakusafw.testdriver.core.ExporterRetriever;
import com.asakusafw.vocabulary.bulkloader.BulkLoadExporterDescription;
import com.asakusafw.vocabulary.bulkloader.BulkLoadExporterDescription.DuplicateRecordCheck;
/**
* Implementation of {@link ExporterRetriever} for {@link BulkLoadExporterDescription}s.
* @since 0.2.0
*/
public class BulkLoadExporterRetriever extends AbstractExporterRetriever<BulkLoadExporterDescription> {
static final Logger LOG = LoggerFactory.getLogger(BulkLoadExporterRetriever.class);
@Override
public void truncate(BulkLoadExporterDescription description) throws IOException {
Configuration conf = Configuration.load(description.getTargetName());
truncate(conf, description.getTableName());
if (description.getDuplicateRecordCheck() != null) {
truncate(conf, description.getDuplicateRecordCheck().getTableName());
}
}
private void truncate(Configuration conf, String tableName) throws IOException {
assert conf != null;
assert tableName != null;
LOG.info("エクスポート先のテーブル{}の内容を消去します", tableName);
Util.truncate(conf, tableName);
}
@Override
public <V> ModelOutput<V> createOutput(DataModelDefinition<V> definition,
BulkLoadExporterDescription description) throws IOException {
Configuration conf = Configuration.load(description.getTargetName());
TableInfo<V> info = buildTableInfo(definition, description);
LOG.info("エクスポート先の初期値を設定します: テーブル{}", info.getTableName());
LOG.debug("Opening output: {}", info);
Connection conn = conf.open();
boolean green = false;
try {
ModelOutput<V> output = new TableOutput<V>(info, conn);
green = true;
return output;
} finally {
if (green == false) {
try {
conn.close();
} catch (SQLException e) {
LOG.warn("error occurred while closing database connection", e);
}
}
}
}
@Override
public <V> DataModelSource createSource(DataModelDefinition<V> definition,
BulkLoadExporterDescription description) throws IOException {
Configuration conf = Configuration.load(description.getTargetName());
TableInfo<V> info = buildTableInfo(definition, description);
LOG.info("エクスポート結果を取得します: テーブル{}", info.getTableName());
LOG.debug("Opening results: {}", info);
Connection conn = conf.open();
boolean green = false;
try {
DataModelSource source = new TableSource<V>(info, conn);
green = true;
return source;
} finally {
if (green == false) {
try {
conn.close();
} catch (SQLException e) {
LOG.warn("error occurred while closing database connection", e);
}
}
}
}
private <V> TableInfo<V> buildTableInfo(
DataModelDefinition<V> definition,
BulkLoadExporterDescription description) throws IOException {
assert definition != null;
assert description != null;
if (isNormalTarget(definition, description)) {
return new TableInfo<V>(
definition,
description.getTableName(),
description.getTargetColumnNames());
} else {
DuplicateRecordCheck dup = description.getDuplicateRecordCheck();
List<String> columns = dup.getColumnNames();
if (columns.contains(dup.getErrorCodeColumnName()) == false) {
// restore error code column name
columns = new ArrayList<String>(columns);
columns.add(dup.getErrorCodeColumnName());
}
return new TableInfo<V>(
definition,
dup.getTableName(),
columns);
}
}
private boolean isNormalTarget(DataModelDefinition<?> definition,
BulkLoadExporterDescription description) throws IOException {
assert definition != null;
assert description != null;
LOG.debug("Detecting export target");
Class<?> modelClass = definition.getModelClass();
DuplicateRecordCheck dupcheck = description.getDuplicateRecordCheck();
if (dupcheck != null && modelClass == dupcheck.getTableModelClass()) {
return false;
} else if (modelClass == description.getTableModelClass()) {
return true;
} else {
throw new IOException(MessageFormat.format(
"エクスポート記述{0}はテーブルモデル{1}を対象としません",
description.getClass().getName(),
modelClass.getName()));
}
}
}