/*
* 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 com.facebook.presto.sql.tree;
import com.google.common.collect.ImmutableList;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import static com.google.common.base.MoreObjects.toStringHelper;
import static java.util.Objects.requireNonNull;
public class ShowTables
extends Statement
{
private final Optional<QualifiedName> schema;
private final Optional<String> likePattern;
public ShowTables(Optional<QualifiedName> schema, Optional<String> likePattern)
{
this(Optional.empty(), schema, likePattern);
}
public ShowTables(NodeLocation location, Optional<QualifiedName> schema, Optional<String> likePattern)
{
this(Optional.of(location), schema, likePattern);
}
private ShowTables(Optional<NodeLocation> location, Optional<QualifiedName> schema, Optional<String> likePattern)
{
super(location);
requireNonNull(schema, "schema is null");
requireNonNull(likePattern, "likePattern is null");
this.schema = schema;
this.likePattern = likePattern;
}
public Optional<QualifiedName> getSchema()
{
return schema;
}
public Optional<String> getLikePattern()
{
return likePattern;
}
@Override
public <R, C> R accept(AstVisitor<R, C> visitor, C context)
{
return visitor.visitShowTables(this, context);
}
@Override
public List<Node> getChildren()
{
return ImmutableList.of();
}
@Override
public int hashCode()
{
return Objects.hash(schema, likePattern);
}
@Override
public boolean equals(Object obj)
{
if (this == obj) {
return true;
}
if ((obj == null) || (getClass() != obj.getClass())) {
return false;
}
ShowTables o = (ShowTables) obj;
return Objects.equals(schema, o.schema) &&
Objects.equals(likePattern, o.likePattern);
}
@Override
public String toString()
{
return toStringHelper(this)
.add("schema", schema)
.add("likePattern", likePattern)
.toString();
}
}