vvysotskyi commented on a change in pull request #1844: DRILL-7326: Support
repeated lists for CTAS parquet format
URL: https://github.com/apache/drill/pull/1844#discussion_r315671441
##########
File path:
exec/java-exec/src/main/codegen/templates/ParquetOutputRecordWriter.java
##########
@@ -268,10 +268,109 @@ public void writeField() throws IOException {
consumer.endField(fieldName, fieldId);
</#if>
}
+
+ <#if mode.prefix == "Repeated">
+ @Override
+ public void writeListField() {
+ if (reader.size() == 0) {
+ return;
+ }
+ consumer.startField("list", 0);
+ for (int i = 0; i < reader.size(); i++) {
+ consumer.startGroup();
+ consumer.startField("element", 0);
+
+ <#if minor.class == "TinyInt" ||
+ minor.class == "UInt1" ||
+ minor.class == "UInt2" ||
+ minor.class == "SmallInt" ||
+ minor.class == "Int" ||
+ minor.class == "Time" ||
+ minor.class == "Decimal9" ||
+ minor.class == "UInt4">
+ reader.read(i, holder);
+ consumer.addInteger(holder.value);
+ <#elseif minor.class == "Float4">
+ reader.read(i, holder);
+ consumer.addFloat(holder.value);
+ <#elseif minor.class == "BigInt" ||
+ minor.class == "Decimal18" ||
+ minor.class == "TimeStamp" ||
+ minor.class == "UInt8">
+ reader.read(i, holder);
+ consumer.addLong(holder.value);
+ <#elseif minor.class == "Date">
+ reader.read(i, holder);
+ consumer.addInteger((int) (holder.value /
DateTimeConstants.MILLIS_PER_DAY));
+ <#elseif minor.class == "Float8">
+ reader.read(i, holder);
+ consumer.addDouble(holder.value);
+ <#elseif minor.class == "Bit">
+ reader.read(i, holder);
+ consumer.addBoolean(holder.value == 1);
+ <#elseif minor.class == "Decimal28Sparse" ||
+ minor.class == "Decimal38Sparse">
+ <#if mode.prefix == "Repeated" >
+ <#else>
+ consumer.startField(fieldName, fieldId);
+ reader.read(holder);
+ byte[] bytes = DecimalUtility.getBigDecimalFromSparse(
+ holder.buffer, holder.start, ${minor.class}Holder.nDecimalDigits,
holder.scale).unscaledValue().toByteArray();
+ byte[] output = new
byte[ParquetTypeHelper.getLengthForMinorType(MinorType.${minor.class?upper_case})];
+ if (holder.getSign(holder.start, holder.buffer)) {
+ Arrays.fill(output, 0, output.length - bytes.length, (byte)0xFF);
+ } else {
+ Arrays.fill(output, 0, output.length - bytes.length, (byte)0x0);
+ }
+ System.arraycopy(bytes, 0, output, output.length - bytes.length,
bytes.length);
+ consumer.addBinary(Binary.fromByteArray(output));
+ consumer.endField(fieldName, fieldId);
+ </#if>
+ <#elseif minor.class?contains("Interval")>
+ consumer.startField(fieldName, fieldId);
+ reader.read(holder);
+ <#if minor.class == "IntervalDay">
+ Arrays.fill(output, 0, 4, (byte) 0);
+ IntervalUtility.intToLEByteArray(holder.days, output, 4);
+ IntervalUtility.intToLEByteArray(holder.milliseconds, output, 8);
+ <#elseif minor.class == "IntervalYear">
+ IntervalUtility.intToLEByteArray(holder.value, output, 0);
+ Arrays.fill(output, 4, 8, (byte) 0);
+ Arrays.fill(output, 8, 12, (byte) 0);
+ <#elseif minor.class == "Interval">
+ IntervalUtility.intToLEByteArray(holder.months, output, 0);
+ IntervalUtility.intToLEByteArray(holder.days, output, 4);
+ IntervalUtility.intToLEByteArray(holder.milliseconds, output, 8);
+ </#if>
+ consumer.addBinary(Binary.fromByteArray(output));
+ consumer.endField(fieldName, fieldId);
+
+ <#elseif
+ minor.class == "TimeTZ" ||
+ minor.class == "Decimal28Dense" ||
+ minor.class == "Decimal38Dense">
+ <#elseif minor.class == "VarChar" || minor.class == "Var16Char"
+ || minor.class == "VarBinary" || minor.class == "VarDecimal">
+ reader.read(i, holder);
+ <#if minor.class == "VarDecimal">
+ decimalValueWriter.writeValue(consumer, holder.buffer,
+ holder.start, holder.end, reader.getField().getPrecision());
+ <#else>
+
consumer.addBinary(Binary.fromByteBuffer(holder.buffer.nioBuffer(holder.start,
holder.end - holder.start)));
+ </#if>
+ </#if>
+
+ consumer.endField("element", 0);
Review comment:
It would be good also to replace strings here with constants if they will be
created.
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