/*
* 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.sql.tree;
import com.google.common.base.MoreObjects;
import com.google.common.base.Objects;
import com.google.common.base.Preconditions;
import java.util.Collections;
import java.util.List;
public class SetStatement extends Statement {
public enum Scope {
GLOBAL, SESSION, LOCAL
}
public enum SettingType {
TRANSIENT, PERSISTENT
}
private final Scope scope;
private final SettingType settingType;
private final List<Assignment> assignments;
public SetStatement(Scope scope, List<Assignment> assignments) {
this(scope, SettingType.TRANSIENT, assignments);
}
public SetStatement(Scope scope, SettingType settingType, List<Assignment> assignments) {
Preconditions.checkNotNull(assignments, "assignments are null");
this.scope = scope;
this.settingType = settingType;
this.assignments = assignments;
}
public SetStatement(Scope scope, Assignment assignment) {
Preconditions.checkNotNull(assignment, "assignment is null");
this.scope = scope;
this.settingType = SettingType.TRANSIENT;
this.assignments = Collections.singletonList(assignment);
}
public Scope scope() {
return scope;
}
public List<Assignment> assignments() {
return assignments;
}
public SettingType settingType() {
return settingType;
}
@Override
public int hashCode() {
return Objects.hashCode(scope, assignments, settingType);
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this)
.add("scope", scope)
.add("assignments", assignments)
.add("settingType", settingType)
.toString();
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
SetStatement update = (SetStatement) o;
if (!scope.equals(update.scope)) return false;
if (!assignments.equals(update.assignments)) return false;
if (!settingType.equals(update.settingType)) return false;
return true;
}
@Override
public <R, C> R accept(AstVisitor<R, C> visitor, C context) {
return visitor.visitSetStatement(this, context);
}
}