/*
* 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.cassandra;
import com.facebook.presto.cassandra.util.CassandraCqlUtils;
import com.google.common.collect.ImmutableList;
import java.util.List;
import static com.google.common.base.MoreObjects.toStringHelper;
import static java.util.stream.Collectors.toList;
public class CassandraTable
{
private final CassandraTableHandle tableHandle;
private final List<CassandraColumnHandle> columns;
public CassandraTable(CassandraTableHandle tableHandle, List<CassandraColumnHandle> columns)
{
this.tableHandle = tableHandle;
this.columns = ImmutableList.copyOf(columns);
}
public List<CassandraColumnHandle> getColumns()
{
return columns;
}
public CassandraTableHandle getTableHandle()
{
return tableHandle;
}
public List<CassandraColumnHandle> getPartitionKeyColumns()
{
return columns.stream()
.filter(CassandraColumnHandle::isPartitionKey)
.collect(toList());
}
public List<CassandraColumnHandle> getClusteringKeyColumns()
{
return columns.stream()
.filter(CassandraColumnHandle::isClusteringKey)
.collect(toList());
}
public String getTokenExpression()
{
StringBuilder sb = new StringBuilder();
for (CassandraColumnHandle column : getPartitionKeyColumns()) {
if (sb.length() == 0) {
sb.append("token(");
}
else {
sb.append(",");
}
sb.append(CassandraCqlUtils.validColumnName(column.getName()));
}
sb.append(")");
return sb.toString();
}
@Override
public int hashCode()
{
return tableHandle.hashCode();
}
@Override
public boolean equals(Object obj)
{
if (this == obj) {
return true;
}
if (!(obj instanceof CassandraTable)) {
return false;
}
CassandraTable that = (CassandraTable) obj;
return this.tableHandle.equals(that.tableHandle);
}
@Override
public String toString()
{
return toStringHelper(this)
.add("tableHandle", tableHandle)
.toString();
}
}