| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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. |
| */ |
| package org.apache.cassandra.cql3.selection; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.config.ColumnDefinition; |
| import org.apache.cassandra.cql3.QueryOptions; |
| import org.apache.cassandra.cql3.ColumnSpecification; |
| import org.apache.cassandra.cql3.selection.Selection.ResultSetBuilder; |
| import org.apache.cassandra.db.marshal.AbstractType; |
| import org.apache.cassandra.db.marshal.Int32Type; |
| import org.apache.cassandra.db.marshal.LongType; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| |
| final class WritetimeOrTTLSelector extends Selector |
| { |
| private final String columnName; |
| private final int idx; |
| private final boolean isWritetime; |
| private ByteBuffer current; |
| private boolean isSet; |
| |
| public static Factory newFactory(final ColumnDefinition def, final int idx, final boolean isWritetime) |
| { |
| return new Factory() |
| { |
| protected String getColumnName() |
| { |
| return String.format("%s(%s)", isWritetime ? "writetime" : "ttl", def.name.toString()); |
| } |
| |
| protected AbstractType<?> getReturnType() |
| { |
| return isWritetime ? LongType.instance : Int32Type.instance; |
| } |
| |
| protected void addColumnMapping(SelectionColumnMapping mapping, ColumnSpecification resultsColumn) |
| { |
| mapping.addMapping(resultsColumn, def); |
| } |
| |
| public Selector newInstance(QueryOptions options) |
| { |
| return new WritetimeOrTTLSelector(def.name.toString(), idx, isWritetime); |
| } |
| |
| public boolean isWritetimeSelectorFactory() |
| { |
| return isWritetime; |
| } |
| |
| public boolean isTTLSelectorFactory() |
| { |
| return !isWritetime; |
| } |
| }; |
| } |
| |
| public void addInput(int protocolVersion, ResultSetBuilder rs) |
| { |
| if (isSet) |
| return; |
| |
| isSet = true; |
| |
| if (isWritetime) |
| { |
| long ts = rs.timestamps[idx]; |
| current = ts != Long.MIN_VALUE ? ByteBufferUtil.bytes(ts) : null; |
| } |
| else |
| { |
| int ttl = rs.ttls[idx]; |
| current = ttl > 0 ? ByteBufferUtil.bytes(ttl) : null; |
| } |
| } |
| |
| public ByteBuffer getOutput(int protocolVersion) |
| { |
| return current; |
| } |
| |
| public void reset() |
| { |
| isSet = false; |
| current = null; |
| } |
| |
| public AbstractType<?> getType() |
| { |
| return isWritetime ? LongType.instance : Int32Type.instance; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return columnName; |
| } |
| |
| private WritetimeOrTTLSelector(String columnName, int idx, boolean isWritetime) |
| { |
| this.columnName = columnName; |
| this.idx = idx; |
| this.isWritetime = isWritetime; |
| } |
| |
| } |