/*
* 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.metadata;
import com.facebook.presto.spi.SchemaTablePrefix;
import javax.annotation.concurrent.Immutable;
import java.util.Objects;
import java.util.Optional;
import static com.facebook.presto.metadata.MetadataUtil.checkCatalogName;
import static com.facebook.presto.metadata.MetadataUtil.checkSchemaName;
import static com.facebook.presto.metadata.MetadataUtil.checkTableName;
@Immutable
public class QualifiedTablePrefix
{
private final String catalogName;
private final Optional<String> schemaName;
private final Optional<String> tableName;
public QualifiedTablePrefix(String catalogName)
{
this.catalogName = checkCatalogName(catalogName);
this.schemaName = Optional.empty();
this.tableName = Optional.empty();
}
public QualifiedTablePrefix(String catalogName, String schemaName)
{
this.catalogName = checkCatalogName(catalogName);
this.schemaName = Optional.of(checkSchemaName(schemaName));
this.tableName = Optional.empty();
}
public QualifiedTablePrefix(String catalogName, String schemaName, String tableName)
{
this.catalogName = checkCatalogName(catalogName);
this.schemaName = Optional.of(checkSchemaName(schemaName));
this.tableName = Optional.of(checkTableName(tableName));
}
public QualifiedTablePrefix(String catalogName, Optional<String> schemaName, Optional<String> tableName)
{
checkTableName(catalogName, schemaName, tableName);
this.catalogName = catalogName;
this.schemaName = schemaName;
this.tableName = tableName;
}
public String getCatalogName()
{
return catalogName;
}
public Optional<String> getSchemaName()
{
return schemaName;
}
public Optional<String> getTableName()
{
return tableName;
}
public boolean hasSchemaName()
{
return schemaName.isPresent();
}
public boolean hasTableName()
{
return tableName.isPresent();
}
public SchemaTablePrefix asSchemaTablePrefix()
{
if (!schemaName.isPresent()) {
return new SchemaTablePrefix();
}
else if (!tableName.isPresent()) {
return new SchemaTablePrefix(schemaName.get());
}
else {
return new SchemaTablePrefix(schemaName.get(), tableName.get());
}
}
@Override
public boolean equals(Object obj)
{
if (obj == this) {
return true;
}
if ((obj == null) || (getClass() != obj.getClass())) {
return false;
}
QualifiedTablePrefix o = (QualifiedTablePrefix) obj;
return Objects.equals(catalogName, o.catalogName) &&
Objects.equals(schemaName, o.schemaName) &&
Objects.equals(tableName, o.tableName);
}
@Override
public int hashCode()
{
return Objects.hash(catalogName, schemaName, tableName);
}
@Override
public String toString()
{
return catalogName + '.' + schemaName.orElse("*") + '.' + tableName.orElse("*");
}
}