/**
* 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 org.apache.metamodel.insert;
import org.apache.metamodel.DataContext;
import org.apache.metamodel.UpdateCallback;
import org.apache.metamodel.UpdateScript;
import org.apache.metamodel.UpdateableDataContext;
import org.apache.metamodel.data.AbstractRowBuilder;
import org.apache.metamodel.data.RowBuilder;
import org.apache.metamodel.data.Style;
import org.apache.metamodel.schema.Column;
import org.apache.metamodel.schema.Table;
/**
* Represents a single INSERT INTO operation to be applied to a
* {@link UpdateableDataContext}. Instead of providing a custom implementation
* of the {@link UpdateScript} interface, one can use this pre-built
* single-record insertion implementation. Some {@link DataContext}s may even
* optimize specifically based on the knowledge that there will only be a single
* record inserted.
*/
public final class InsertInto extends AbstractRowBuilder<InsertInto> implements UpdateScript, RowBuilder<InsertInto> {
private final Table _table;
public InsertInto(Table table) {
super(table);
_table = table;
}
@Override
public void run(UpdateCallback callback) {
RowInsertionBuilder insertBuilder = callback.insertInto(getTable());
final Column[] columns = getColumns();
final Object[] values = getValues();
final Style[] styles = getStyles();
final boolean[] explicitNulls = getExplicitNulls();
for (int i = 0; i < columns.length; i++) {
Object value = values[i];
Column column = columns[i];
Style style = styles[i];
if (value == null) {
if (explicitNulls[i]) {
insertBuilder = insertBuilder.value(column, value, style);
}
} else {
insertBuilder = insertBuilder.value(column, value, style);
}
}
insertBuilder.execute();
}
@Override
public Table getTable() {
return _table;
}
}