| /* |
| * 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.phoenix.expression.function; |
| |
| import org.apache.hadoop.hbase.io.ImmutableBytesWritable; |
| |
| import org.apache.phoenix.compile.StatementContext; |
| import org.apache.phoenix.expression.CurrentDateTimeFunction; |
| import org.apache.phoenix.expression.Expression; |
| import org.apache.phoenix.parse.CurrentDateParseNode; |
| import org.apache.phoenix.parse.FunctionParseNode.BuiltInFunction; |
| import org.apache.phoenix.schema.types.PDate; |
| import org.apache.phoenix.schema.types.PDataType; |
| import org.apache.phoenix.schema.tuple.Tuple; |
| |
| import java.sql.SQLException; |
| import java.util.List; |
| |
| |
| /** |
| * |
| * Function that returns the current date accurate to the millisecond. Note that this |
| * function is never evaluated on the server-side, instead the server side date is |
| * retrieved (piggy-backed on the call to check that the metadata is up-to-date) and |
| * passed into this function at create time. |
| * |
| * |
| * @since 0.1 |
| */ |
| @BuiltInFunction(name=CurrentDateFunction.NAME, nodeClass=CurrentDateParseNode.class, args= {} ) |
| public class CurrentDateFunction extends CurrentDateTimeFunction { |
| public static final String NAME = "CURRENT_DATE"; |
| private final ImmutableBytesWritable currentDate = new ImmutableBytesWritable(new byte[PDate.INSTANCE.getByteSize()]); |
| |
| public CurrentDateFunction() { |
| this(System.currentTimeMillis()); |
| } |
| |
| public CurrentDateFunction(List<Expression> children, StatementContext context) throws SQLException { |
| this(context.getCurrentTime()); |
| } |
| |
| public CurrentDateFunction(long timeStamp) { |
| getDataType().getCodec().encodeLong(timeStamp, currentDate); |
| } |
| |
| @Override |
| public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) { |
| ptr.set(currentDate.get(), 0, PDate.INSTANCE.getByteSize()); |
| return true; |
| } |
| |
| @Override |
| public final PDataType getDataType() { |
| return PDate.INSTANCE; |
| } |
| |
| @Override |
| public String getName() { |
| return NAME; |
| } |
| } |