Package org.apache.phoenix.expression

Examples of org.apache.phoenix.expression.KeyValueColumnExpression

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        PhoenixConnection pconn = DriverManager.getConnection(getUrl(), PropertiesUtil.deepCopy(TEST_PROPERTIES)).unwrap(PhoenixConnection.class);
        PhoenixStatement statement = new PhoenixStatement(pconn);
        StatementContext context = new StatementContext(statement, null, new Scan(), new SequenceManager(statement));
        AggregationManager aggregationManager = context.getAggregationManager();
        SumAggregateFunction func = new SumAggregateFunction(Arrays.<Expression>asList(new KeyValueColumnExpression(new PLongColumn() {
            @Override
            public PName getName() {
                return SINGLE_COLUMN_NAME;
            }
            @Override
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    public static BigDecimal computeAverage(long sum, long count) {
        return BigDecimal.valueOf(sum).divide(BigDecimal.valueOf(count), PDataType.DEFAULT_MATH_CONTEXT);
    }

    public static Expression constantComparison(CompareOp op, PColumn c, Object o) {
        return  new ComparisonExpression(op, Arrays.<Expression>asList(new KeyValueColumnExpression(c), LiteralExpression.newConstant(o)));
    }
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    public static Expression constantComparison(CompareOp op, PColumn c, Object o) {
        return  new ComparisonExpression(op, Arrays.<Expression>asList(new KeyValueColumnExpression(c), LiteralExpression.newConstant(o)));
    }

    public static Expression kvColumn(PColumn c) {
        return new KeyValueColumnExpression(c);
    }
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        ByteArrayInputStream stream = new ByteArrayInputStream(specificArrayIdx);
        try {
            DataInputStream input = new DataInputStream(stream);
            int arrayKVRefSize = WritableUtils.readVInt(input);
            for (int i = 0; i < arrayKVRefSize; i++) {
                KeyValueColumnExpression kvExp = new KeyValueColumnExpression();
                kvExp.readFields(input);
                arrayKVRefs.add(kvExp);
            }
            int arrayKVFuncSize = WritableUtils.readVInt(input);
            Expression[] arrayFuncRefs = new Expression[arrayKVFuncSize];
            for (int i = 0; i < arrayKVFuncSize; i++) {
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                // The size of both the arrays would be same?
                // Using KeyValueSchema to set and retrieve the value
                // collect the first kv to get the row
                KeyValue rowKv = result.get(0);
                for (int i = 0; i < arrayKVRefs.size(); i++) {
                    KeyValueColumnExpression kvExp = arrayKVRefs.get(i);
                    if (kvExp.evaluate(tuple, ptr)) {
                        for (int idx = tuple.size() - 1; idx >= 0; idx--) {
                            KeyValue kv = tuple.getValue(idx);
                            if (Bytes.equals(kvExp.getColumnFamily(), kv.getFamily())
                                    && Bytes.equals(kvExp.getColumnName(), kv.getQualifier())) {
                                // remove the kv that has the full array values.
                                result.remove(idx);
                                break;
                            }
                        }
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            String indexColumnName = column.getName().getString();
            String dataFamilyName = IndexUtil.getDataColumnFamilyName(indexColumnName);
            String dataColumnName = IndexUtil.getDataColumnName(indexColumnName);
            String defaultFamilyName = table.getDefaultFamilyName() == null ? QueryConstants.DEFAULT_COLUMN_FAMILY : table.getDefaultFamilyName().getString();
            String displayName = SchemaUtil.getColumnDisplayName(defaultFamilyName.equals(dataFamilyName) ? null : dataFamilyName, dataColumnName);
          return new KeyValueColumnExpression(column, displayName);
        }
       
        if (table.getType() == PTableType.JOIN) {
          return new ProjectedColumnExpression(column, table, column.getName().getString());
        }
      
        byte[] defaultFamily = table.getDefaultFamilyName() == null ? QueryConstants.DEFAULT_COLUMN_FAMILY_BYTES : table.getDefaultFamilyName().getBytes();
        String displayName = SchemaUtil.getColumnDisplayName(Bytes.compareTo(defaultFamily, column.getFamilyName().getBytes()) == 0  ? null : column.getFamilyName().getBytes(), column.getName().getBytes());
        return new KeyValueColumnExpression(column, displayName);
    }
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                    new RowKeyValueAccessor(this.getTable().getPKColumns(), pkSlotPosition),
                    name);
        } else {
            return isIndex
                    ? new IndexKeyValueColumnExpression(getColumn())
                    :  new KeyValueColumnExpression(getColumn());
        }
    }
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            };

        PhoenixConnection pconn = DriverManager.getConnection(getUrl(), TEST_PROPERTIES).unwrap(PhoenixConnection.class);
        StatementContext context = new StatementContext(SelectStatement.COUNT_ONE, pconn, null, Collections.emptyList(), new Scan());
        AggregationManager aggregationManager = context.getAggregationManager();
        SumAggregateFunction func = new SumAggregateFunction(Arrays.<Expression>asList(new KeyValueColumnExpression(new PLongColumn() {
            @Override
            public PName getName() {
                return SINGLE_COLUMN_NAME;
            }
            @Override
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    public static BigDecimal computeAverage(long sum, long count) {
        return BigDecimal.valueOf(sum).divide(BigDecimal.valueOf(count), PDataType.DEFAULT_MATH_CONTEXT);
    }

    public static Expression constantComparison(CompareOp op, PColumn c, Object o) {
        return  new ComparisonExpression(op, Arrays.<Expression>asList(new KeyValueColumnExpression(c), LiteralExpression.newConstant(o)));
    }
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    public static Expression constantComparison(CompareOp op, PColumn c, Object o) {
        return  new ComparisonExpression(op, Arrays.<Expression>asList(new KeyValueColumnExpression(c), LiteralExpression.newConstant(o)));
    }

    public static Expression kvColumn(PColumn c) {
        return new KeyValueColumnExpression(c);
    }
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Related Classes of org.apache.phoenix.expression.KeyValueColumnExpression

  • org.apache.hadoop.hbase.KeyValue
  • org.apache.phoenix.coprocessor.ScanRegionObserver
  • org.apache.phoenix.iterate.AggregateResultScannerTest
  • org.apache.phoenix.schema.ColumnRef
  • org.apache.phoenix.util.IndexUtil
  • org.apache.phoenix.util.TestUtil
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