/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.analyze;
import io.crate.sql.tree.CollectionColumnType;
import io.crate.sql.tree.ColumnType;
import io.crate.sql.tree.DefaultTraversalVisitor;
import io.crate.sql.tree.ObjectColumnType;
import io.crate.types.ArrayType;
import io.crate.types.DataType;
import io.crate.types.DataTypes;
import java.util.Locale;
public class DataTypeAnalyzer extends DefaultTraversalVisitor<DataType, Void> {
@Override
public DataType visitColumnType(ColumnType node, Void context) {
String typeName = node.name();
if (typeName == null) {
return DataTypes.NOT_SUPPORTED;
} else {
typeName = typeName.toLowerCase(Locale.ENGLISH);
return DataTypes.ofName(typeName);
}
}
@Override
public DataType visitObjectColumnType(ObjectColumnType node, Void context) {
return DataTypes.OBJECT;
}
@Override
public DataType visitCollectionColumnType(CollectionColumnType node, Void context) {
if (node.type() == ColumnType.Type.SET) {
throw new UnsupportedOperationException("the SET dataType is currently not supported");
}
if (node.innerType().type() != ColumnType.Type.PRIMITIVE) {
throw new UnsupportedOperationException("Nesting ARRAY or SET types is not supported");
}
DataType innerType = process(node.innerType(), context);
return new ArrayType(innerType);
}
}