Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/785#discussion_r110055928
--- Diff:
exec/java-exec/src/test/java/org/apache/drill/test/rowSet/RowSetUtilities.java
---
@@ -0,0 +1,83 @@
+/*
+ * 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.drill.test.rowSet;
+
+import org.apache.drill.common.types.TypeProtos.MinorType;
+import org.apache.drill.exec.record.selection.SelectionVector2;
+import org.apache.drill.exec.vector.accessor.AccessorUtilities;
+import org.apache.drill.exec.vector.accessor.ColumnAccessor.ValueType;
+import org.apache.drill.exec.vector.accessor.ColumnWriter;
+import org.apache.drill.test.rowSet.RowSet.RowSetWriter;
+import org.joda.time.Duration;
+import org.joda.time.Period;
+
+public class RowSetUtilities {
+
+ private RowSetUtilities() { }
+
+ public static void reverse(SelectionVector2 sv2) {
+ int count = sv2.getCount();
+ for (int i = 0; i < count / 2; i++) {
+ char temp = sv2.getIndex(i);
+ int dest = count - 1 - i;
+ sv2.setIndex(i, sv2.getIndex(dest));
+ sv2.setIndex(dest, temp);
+ }
+ }
+
+ /**
+ * Set a test data value from an int. Uses the type information of the
+ * column to handle interval types. Else, uses the value type of the
+ * accessor. The value set here is purely for testing; the mapping
+ * from ints to intervals has no real meaning.
+ *
+ * @param rowWriter
+ * @param index
+ * @param value
+ */
+
+ public static void setFromInt(RowSetWriter rowWriter, int index, int
value) {
+ ColumnWriter writer = rowWriter.column(index);
+ if (writer.valueType() == ValueType.PERIOD) {
+ setPeriodFromInt(writer,
rowWriter.schema().column(index).getType().getMinorType(), value);
+ } else {
+ AccessorUtilities.setFromInt(writer, value);
+ }
+ }
+
+ public static void setPeriodFromInt(ColumnWriter writer, MinorType
minorType,
+ int value) {
+ switch (minorType) {
+ case INTERVAL:
+ writer.setPeriod(Duration.millis(value).toPeriod());
+ break;
+ case INTERVALYEAR:
+ writer.setPeriod(Period.years(value / 12).withMonths(value % 12));
+ break;
+ case INTERVALDAY:
+ int sec = value % 60;
+ value = value / 60;
+ int min = value % 60;
+ value = value / 60;
+
writer.setPeriod(Period.days(value).withMinutes(min).withSeconds(sec));
--- End diff --
This is a data generator. The int has no real meaning, it is just a
convenient way to populate a field. So, here we just slice off some values to
put into each field. Not pretty, but convenient for testing.
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