exec/java-exec/src/main/codegen/templates/CastIntervalInterval.java

/*
 * 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.
 */
<@pp.dropOutputFile />

<#list cast.types as type>

<#if type.major == "IntervalSimpleToComplex">   <#-- Template to convert from IntervalDay, IntervalYear to Interval and vice versa -->
<@pp.changeOutputFile name="/org/apache/drill/exec/expr/fn/impl/gcast/Cast${type.from}To${type.to}.java" />

<#include "/@includes/license.ftl" />

package org.apache.drill.exec.expr.fn.impl.gcast;

<#include "/@includes/vv_imports.ftl" />

import io.netty.buffer.ByteBuf;

import org.apache.drill.exec.expr.DrillSimpleFunc;
import org.apache.drill.exec.expr.annotations.FunctionTemplate;
import org.apache.drill.exec.expr.annotations.FunctionTemplate.NullHandling;
import org.apache.drill.exec.expr.annotations.Output;
import org.apache.drill.exec.expr.annotations.Param;
import org.apache.drill.exec.expr.annotations.Workspace;
import org.apache.drill.exec.expr.holders.*;
import org.apache.drill.exec.record.RecordBatch;
import org.joda.time.MutableDateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.DateMidnight;

/*
 * This class is generated using freemarker and the ${.template_name} template.
 */
@SuppressWarnings("unused")
@FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
public class Cast${type.from}To${type.to} implements DrillSimpleFunc {

  @Param ${type.from}Holder in;
  @Output ${type.to}Holder out;

  public void setup() {
  }

  public void eval() {
        out.months       = ${type.months};
        out.days         = ${type.days};
        out.milliseconds = ${type.millis};
  }
}

<#elseif type.major == "IntervalComplexToSimple">
<@pp.changeOutputFile name="/org/apache/drill/exec/expr/fn/impl/gcast/Cast${type.from}To${type.to}.java" />

<#include "/@includes/license.ftl" />

package org.apache.drill.exec.expr.fn.impl.gcast;

import io.netty.buffer.ByteBuf;

import org.apache.drill.exec.expr.DrillSimpleFunc;
import org.apache.drill.exec.expr.annotations.FunctionTemplate;
import org.apache.drill.exec.expr.annotations.FunctionTemplate.NullHandling;
import org.apache.drill.exec.expr.annotations.Output;
import org.apache.drill.exec.expr.annotations.Param;
import org.apache.drill.exec.expr.annotations.Workspace;
import org.apache.drill.exec.expr.holders.*;
import org.apache.drill.exec.record.RecordBatch;
import org.joda.time.MutableDateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.DateMidnight;

@SuppressWarnings("unused")
@FunctionTemplate(name = "cast${type.to?upper_case}", scope = FunctionTemplate.FunctionScope.SIMPLE, nulls=NullHandling.NULL_IF_NULL)
public class Cast${type.from}To${type.to} implements DrillSimpleFunc {

  @Param ${type.from}Holder in;
  @Output ${type.to}Holder out;

  public void setup() {
  }

  public void eval() {

      <#if type.to == "IntervalYear">
      out.value = in.months;
      <#elseif type.to == "IntervalDay">
      out.days = in.days;
      out.milliseconds = in.milliseconds;
      </#if>
  }
}
</#if> <#-- type.major -->
</#list>