/*
* Licensed to 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.analyze.relations.AnalyzedRelation;
import io.crate.analyze.relations.AnalyzedRelationVisitor;
import io.crate.analyze.symbol.Field;
import io.crate.exceptions.ColumnUnknownException;
import io.crate.metadata.OutputName;
import io.crate.metadata.Path;
import io.crate.metadata.table.Operation;
import io.crate.sql.tree.QualifiedName;
import io.crate.types.DataTypes;
import javax.annotation.Nonnull;
import java.util.Collections;
import java.util.List;
public class ExplainAnalyzedStatement implements AnalyzedStatement, AnalyzedRelation {
final AnalyzedStatement statement;
private final List<Field> fields;
public ExplainAnalyzedStatement(String columnName, AnalyzedStatement statement) {
this.statement = statement;
this.fields = Collections.singletonList(new Field(this, new OutputName(columnName), DataTypes.OBJECT));
}
@Override
public <C, R> R accept(AnalyzedStatementVisitor<C, R> analyzedStatementVisitor, C context) {
return analyzedStatementVisitor.visitExplainStatement(this, context);
}
public AnalyzedStatement statement() {
return statement;
}
@Override
public <C, R> R accept(AnalyzedRelationVisitor<C, R> visitor, C context) {
return visitor.visitExplain(this, context);
}
@Override
public Field getField(Path path, Operation operation) throws UnsupportedOperationException, ColumnUnknownException {
throw new UnsupportedOperationException("getField is not supported");
}
@Override
public List<Field> fields() {
return fields;
}
@Override
public boolean isWriteOperation() {
return false;
}
@Override
public QualifiedName getQualifiedName() {
throw new UnsupportedOperationException("method not supported");
}
@Override
public void setQualifiedName(@Nonnull QualifiedName qualifiedName) {
throw new UnsupportedOperationException("method not supported");
}
}