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/*
* 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 == "DownwardDecimalSimpleDecimalSimple"> <#-- Cast function template for conversion from Decimal18, Decimal9 -->
<@pp.changeOutputFile name="/org/apache/drill/exec/expr/fn/impl/gcast/Cast${type.from}${type.to}.java" />
<#include "/@includes/license.ftl" />
package org.apache.drill.exec.expr.fn.impl.gcast;
<#include "/@includes/vv_imports.ftl" />
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.holders.*;
import org.apache.drill.exec.record.RecordBatch;
import org.apache.drill.exec.util.DecimalUtility;
import org.apache.drill.exec.expr.annotations.Workspace;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.DrillBuf;
import java.nio.ByteBuffer;
/*
* This class is generated using freemarker and the ${.template_name} template.
*/
@SuppressWarnings("unused")
@FunctionTemplate(name = "cast${type.to?upper_case}",
scope = FunctionTemplate.FunctionScope.SIMPLE,
returnType = FunctionTemplate.ReturnType.DECIMAL_CAST,
nulls = NullHandling.NULL_IF_NULL)
public class Cast${type.from}${type.to} implements DrillSimpleFunc {
@Param ${type.from}Holder in;
@Param BigIntHolder precision;
@Param BigIntHolder scale;
@Output ${type.to}Holder out;
public void setup() {
}
public void eval() {
out.scale = (int) scale.value;
out.precision = (int) precision.value;
out.value = (int) in.value;
// Check if we need to truncate or round up
if (out.scale > in.scale) {
out.value *= (int) org.apache.drill.exec.util.DecimalUtility.getPowerOfTen(out.scale - in.scale);
} else if (out.scale < in.scale) {
// need to round up since we are truncating fractional part
int scaleFactor = (int) (org.apache.drill.exec.util.DecimalUtility.getPowerOfTen((int) in.scale));
int newScaleFactor = (int) (org.apache.drill.exec.util.DecimalUtility.getPowerOfTen((int) scale.value));
int truncScaleFactor = (int) (org.apache.drill.exec.util.DecimalUtility.getPowerOfTen( (int) (Math.abs(in.scale - scale.value))));
int truncFactor = (int) (in.scale - scale.value);
// Assign the integer part
out.value = (int) (in.value / scaleFactor);
// Get the fractional part
int fractionalPart = (int) (in.value % scaleFactor);
// From the entire fractional part extract the digits upto which rounding is needed
int newFractionalPart = (int) (org.apache.drill.exec.util.DecimalUtility.adjustScaleDivide(fractionalPart, truncFactor));
int truncatedFraction = fractionalPart % truncScaleFactor;
// Get the truncated fractional part and extract the first digit to see if we need to add 1
int digit = Math.abs((int) org.apache.drill.exec.util.DecimalUtility.adjustScaleDivide(truncatedFraction, truncFactor - 1));
if (digit > 4) {
if (in.value > 0) {
newFractionalPart++;
} else if (in.value < 0) {
newFractionalPart--;
}
}
out.value = (int) ((out.value * newScaleFactor) + newFractionalPart);
}
}
}
<#elseif type.major == "DownwardDecimalComplexDecimalSimple"> <#-- Cast function template for conversion from Decimal28/Decimal9 to Decimal18/Decimal9 -->
<@pp.changeOutputFile name="/org/apache/drill/exec/expr/fn/impl/gcast/Cast${type.from}${type.to}.java" />
<#include "/@includes/license.ftl" />
package org.apache.drill.exec.expr.fn.impl.gcast;
<#include "/@includes/vv_imports.ftl" />
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.holders.*;
import org.apache.drill.exec.record.RecordBatch;
import org.apache.drill.exec.util.DecimalUtility;
import org.apache.drill.exec.expr.annotations.Workspace;
import io.netty.buffer.ByteBuf;
import java.nio.ByteBuffer;
/*
* This class is generated using freemarker and the ${.template_name} template.
*/
@SuppressWarnings("unused")
@FunctionTemplate(name = "cast${type.to?upper_case}",
scope = FunctionTemplate.FunctionScope.SIMPLE,
returnType = FunctionTemplate.ReturnType.DECIMAL_CAST,
nulls = NullHandling.NULL_IF_NULL)
public class Cast${type.from}${type.to} implements DrillSimpleFunc {
@Param ${type.from}Holder in;
@Param BigIntHolder precision;
@Param BigIntHolder scale;
@Output ${type.to}Holder out;
public void setup() {
}
public void eval() {
java.math.BigDecimal temp = org.apache.drill.exec.util.DecimalUtility.getBigDecimalFromSparse(in.buffer, in.start, in.nDecimalDigits, in.scale);
temp = temp.setScale((int) scale.value, java.math.BigDecimal.ROUND_HALF_UP);
out.value = temp.unscaledValue().${type.javatype}Value();
out.precision = (int) precision.value;
out.scale = (int) scale.value;
}
}
<#elseif type.major == "DownwardDecimalComplexDecimalComplex"> <#-- Cast function template for conversion from Decimal28/Decimal9 to Decimal18/Decimal9 -->
<@pp.changeOutputFile name="/org/apache/drill/exec/expr/fn/impl/gcast/Cast${type.from}${type.to}.java" />
<#include "/@includes/license.ftl" />
package org.apache.drill.exec.expr.fn.impl.gcast;
<#include "/@includes/vv_imports.ftl" />
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.holders.*;
import org.apache.drill.exec.record.RecordBatch;
import org.apache.drill.exec.util.DecimalUtility;
import org.apache.drill.exec.expr.annotations.Workspace;
import io.netty.buffer.ByteBuf;
import java.nio.ByteBuffer;
/*
* This class is generated using freemarker and the ${.template_name} template.
*/
@SuppressWarnings("unused")
@FunctionTemplate(name = "cast${type.to?upper_case}",
scope = FunctionTemplate.FunctionScope.SIMPLE,
returnType = FunctionTemplate.ReturnType.DECIMAL_CAST,
nulls = NullHandling.NULL_IF_NULL)
public class Cast${type.from}${type.to} implements DrillSimpleFunc {
@Param ${type.from}Holder in;
@Param BigIntHolder precision;
@Param BigIntHolder scale;
@Inject DrillBuf buffer;
@Output ${type.to}Holder out;
public void setup() {
int size = (${type.arraySize} * (org.apache.drill.exec.util.DecimalUtility.INTEGER_SIZE));
buffer = buffer.reallocIfNeeded(size);
}
public void eval() {
java.math.BigDecimal temp = org.apache.drill.exec.util.DecimalUtility.getBigDecimalFromSparse(in.buffer, in.start, in.nDecimalDigits, in.scale);
temp = temp.setScale((int) scale.value, java.math.BigDecimal.ROUND_HALF_UP);
out.precision = (int) precision.value;
out.scale = (int) scale.value;
out.buffer = buffer;
out.start = 0;
org.apache.drill.exec.util.DecimalUtility.getSparseFromBigDecimal(temp, out.buffer, out.start, out.scale, out.precision, out.nDecimalDigits);
}
}
</#if> <#-- type.major -->
</#list>
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