/*
* Copyright 2010 NCHOVY
*
* 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.krakenapps.sqlparser.parser;
import java.util.ArrayList;
import java.util.List;
import org.krakenapps.bnf.Binding;
import org.krakenapps.bnf.Parser;
import org.krakenapps.sqlparser.ast.ColumnConstraintDefinition;
import org.krakenapps.sqlparser.ast.ColumnDefinition;
import org.krakenapps.sqlparser.ast.DataType;
public class ColumnDefinitionParser implements Parser {
@Override
public Object parse(Binding b) {
Binding[] children = b.getChildren();
String columnName = (String) children[0].getValue();
DataType dataType = (DataType) children[1].getValue();
List<ColumnConstraintDefinition> constraints = new ArrayList<ColumnConstraintDefinition>();
if (children.length > 2) {
for (int i = 2; i < children.length; i++) {
parse(children[i], constraints);
}
}
ColumnDefinition def = new ColumnDefinition(columnName, dataType, constraints);
return def;
}
private void parse(Binding b, List<ColumnConstraintDefinition> constraints) {
if (b.getChildren() == null) {
constraints.add((ColumnConstraintDefinition) b.getValue());
return;
}
for (int i = 0; i < b.getChildren().length; i++) {
Binding child = b.getChildren()[i];
if (child.getValue() instanceof ColumnConstraintDefinition) {
constraints.add((ColumnConstraintDefinition) child.getValue());
}
}
}
}