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94 changes: 94 additions & 0 deletions
94
src/main/java/com/salesforce/phoenix/expression/aggregator/BaseStddevAggregator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2013, Salesforce.com, Inc. | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are met: | ||
| * | ||
| * Redistributions of source code must retain the above copyright notice, | ||
| * this list of conditions and the following disclaimer. | ||
| * Redistributions in binary form must reproduce the above copyright notice, | ||
| * this list of conditions and the following disclaimer in the documentation | ||
| * and/or other materials provided with the distribution. | ||
| * Neither the name of Salesforce.com nor the names of its contributors may | ||
| * be used to endorse or promote products derived from this software without | ||
| * specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | ||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | ||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| ******************************************************************************/ | ||
| package com.salesforce.phoenix.expression.aggregator; | ||
|
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| import java.math.BigDecimal; | ||
| import java.util.List; | ||
| import java.util.Map.Entry; | ||
|
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| import org.apache.hadoop.hbase.io.ImmutableBytesWritable; | ||
|
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| import com.salesforce.phoenix.expression.Expression; | ||
| import com.salesforce.phoenix.schema.PDataType; | ||
| import com.salesforce.phoenix.schema.tuple.Tuple; | ||
| import com.salesforce.phoenix.util.ImmutableBytesPtr; | ||
|
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| /** | ||
| * | ||
| * @author anoopsjohn | ||
| * @since 1.2.1 | ||
| */ | ||
| public abstract class BaseStddevAggregator extends DistinctValueWithCountClientAggregator { | ||
|
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| protected Expression stdDevColExp; | ||
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| public BaseStddevAggregator(List<Expression> exps) { | ||
| this.stdDevColExp = exps.get(0); | ||
| } | ||
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| @Override | ||
| protected int getBufferLength() { | ||
| return PDataType.DECIMAL.getByteSize(); | ||
| } | ||
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| @Override | ||
| public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) { | ||
| double ssd = sumSquaredDeviation(); | ||
| double result = Math.sqrt(ssd / getDataPointsCount()); | ||
| if (buffer == null) { | ||
| initBuffer(); | ||
| } | ||
| buffer = PDataType.DECIMAL.toBytes(new BigDecimal(result)); | ||
| ptr.set(buffer); | ||
| return true; | ||
| } | ||
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| protected abstract long getDataPointsCount(); | ||
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| private double sumSquaredDeviation() { | ||
| double m = mean(); | ||
| double result = 0.0; | ||
| for (Entry<ImmutableBytesPtr, Integer> entry : valueVsCount.entrySet()) { | ||
| double colValue = ((Number) this.stdDevColExp.getDataType().toObject(entry.getKey())) | ||
| .doubleValue(); | ||
| double delta = colValue - m; | ||
| result += (delta * delta) * entry.getValue(); | ||
| } | ||
| return result; | ||
| } | ||
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| private double mean() { | ||
| double sum = 0.0; | ||
| for (Entry<ImmutableBytesPtr, Integer> entry : valueVsCount.entrySet()) { | ||
| double colValue = ((Number) this.stdDevColExp.getDataType().toObject(entry.getKey())) | ||
| .doubleValue(); | ||
| sum += colValue * entry.getValue(); | ||
| } | ||
| return sum / totalCount; | ||
| } | ||
| } |
94 changes: 94 additions & 0 deletions
94
src/main/java/com/salesforce/phoenix/expression/aggregator/PercentRankClientAggregator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2013, Salesforce.com, Inc. | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are met: | ||
| * | ||
| * Redistributions of source code must retain the above copyright notice, | ||
| * this list of conditions and the following disclaimer. | ||
| * Redistributions in binary form must reproduce the above copyright notice, | ||
| * this list of conditions and the following disclaimer in the documentation | ||
| * and/or other materials provided with the distribution. | ||
| * Neither the name of Salesforce.com nor the names of its contributors may | ||
| * be used to endorse or promote products derived from this software without | ||
| * specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | ||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | ||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| ******************************************************************************/ | ||
| package com.salesforce.phoenix.expression.aggregator; | ||
|
|
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| import java.math.BigDecimal; | ||
| import java.util.*; | ||
| import java.util.Map.Entry; | ||
|
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| import org.apache.hadoop.hbase.io.ImmutableBytesWritable; | ||
|
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| import com.salesforce.phoenix.expression.*; | ||
| import com.salesforce.phoenix.schema.PDataType; | ||
| import com.salesforce.phoenix.schema.tuple.Tuple; | ||
| import com.salesforce.phoenix.util.ImmutableBytesPtr; | ||
|
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| /** | ||
| * Client side Aggregator for PERCENT_RANK aggregations | ||
| * | ||
| * @author anoopsjohn | ||
| * @since 1.2.1 | ||
| */ | ||
| public class PercentRankClientAggregator extends DistinctValueWithCountClientAggregator { | ||
|
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| private List<Expression> exps = null; | ||
|
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| public PercentRankClientAggregator(List<Expression> exps) { | ||
| this.exps = exps; | ||
| } | ||
|
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| @Override | ||
| public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) { | ||
| ColumnExpression columnExp = (ColumnExpression)exps.get(0); | ||
| // Second exp will be a LiteralExpression of Boolean type indicating whether the ordering to | ||
| // be ASC/DESC | ||
| LiteralExpression isAscendingExpression = (LiteralExpression)exps.get(1); | ||
| boolean isAscending = (Boolean)isAscendingExpression.getValue(); | ||
|
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| // Third expression will be LiteralExpression | ||
| LiteralExpression valueExp = (LiteralExpression)exps.get(2); | ||
| // To sort the valueVsCount | ||
| NavigableMap<ImmutableBytesPtr, Integer> sortedMap = new TreeMap<ImmutableBytesPtr, Integer>(valueVsCount); | ||
| if (!isAscending) { | ||
| sortedMap = sortedMap.descendingMap(); | ||
| } | ||
|
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| long distinctCountsSum = 0; | ||
| for (Entry<ImmutableBytesPtr, Integer> entry : sortedMap.entrySet()) { | ||
| Object value = valueExp.getValue(); | ||
| Object colValue = columnExp.getDataType().toObject(entry.getKey()); | ||
| int compareResult = columnExp.getDataType().compareTo(colValue, value, valueExp.getDataType()); | ||
| boolean done = isAscending ? compareResult > 0 : compareResult <= 0; | ||
| if (done) break; | ||
| distinctCountsSum += entry.getValue(); | ||
| } | ||
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| float result = (float)distinctCountsSum / totalCount; | ||
| if (buffer == null) { | ||
| initBuffer(); | ||
| } | ||
| buffer = PDataType.DECIMAL.toBytes(new BigDecimal(result)); | ||
| ptr.set(buffer); | ||
| return true; | ||
| } | ||
|
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| @Override | ||
| protected int getBufferLength() { | ||
| return PDataType.DECIMAL.getByteSize(); | ||
| } | ||
| } |
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50 changes: 50 additions & 0 deletions
50
src/main/java/com/salesforce/phoenix/expression/aggregator/StddevPopAggregator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2013, Salesforce.com, Inc. | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are met: | ||
| * | ||
| * Redistributions of source code must retain the above copyright notice, | ||
| * this list of conditions and the following disclaimer. | ||
| * Redistributions in binary form must reproduce the above copyright notice, | ||
| * this list of conditions and the following disclaimer in the documentation | ||
| * and/or other materials provided with the distribution. | ||
| * Neither the name of Salesforce.com nor the names of its contributors may | ||
| * be used to endorse or promote products derived from this software without | ||
| * specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | ||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | ||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| ******************************************************************************/ | ||
| package com.salesforce.phoenix.expression.aggregator; | ||
|
|
||
| import java.util.List; | ||
|
|
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| import com.salesforce.phoenix.expression.Expression; | ||
|
|
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| /** | ||
| * Client side Aggregator for STDDEV_POP aggregations | ||
| * | ||
| * @author anoopsjohn | ||
| * @since 1.2.1 | ||
| */ | ||
| public class StddevPopAggregator extends BaseStddevAggregator { | ||
|
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| public StddevPopAggregator(List<Expression> exps) { | ||
| super(exps); | ||
| } | ||
|
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| @Override | ||
| protected long getDataPointsCount() { | ||
| return totalCount; | ||
| } | ||
| } |
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