Examples of org.apache.phoenix.expression.Expression.evaluate()

Class org.apache.phoenix.expression.Expression

Examples of org.apache.phoenix.expression.Expression.evaluate()

org.apache.phoenix.expression.Expression.evaluate()
Access the value by setting a pointer to it (as opposed to making a copy of it which can be expensive) @param tuple Single row result during scan iteration @param ptr Pointer to byte value being accessed @return true if the expression could be evaluated (i.e. ptr was set)and false otherwise

                    if (!expression.getDataType().isFixedWidth()) {
                        output.write(QueryConstants.SEPARATOR_BYTE);
                    }
                    expression = expressions.get(i);
                    // TODO: should we track trailing null values and omit the separator bytes?
                    if (expression.evaluate(result, value)) {
                        output.write(value.get(), value.getOffset(), value.getLength());
                    } else if (i < expressions.size()-1 && expression.getDataType().isFixedWidth()) {
                        // This should never happen, because any non terminating nullable fixed width type (i.e. INT or LONG) is
                        // converted to a variable length type (i.e. DECIMAL) to allow an empty byte array to represent null.
                        throw new DoNotRetryIOException("Non terminating null value found for fixed width expression (" + expression + ") in row: " + result);

View Full Code Here

            }
        }
        Expression expression = new LikeExpression(children);
        if (ExpressionUtil.isConstant(expression)) {
            ImmutableBytesWritable ptr = context.getTempPtr();
            if (!expression.evaluate(null, ptr)) {
                return LiteralExpression.newConstant(null, expression.isDeterministic());
            } else {
                return LiteralExpression.newConstant(Boolean.TRUE.equals(PDataType.BOOLEAN.toObject(ptr)) ^ node.isNegate(), expression.isDeterministic());
            }
        }

View Full Code Here

        
        ArrayConstructorExpression arrayExpression = new ArrayConstructorExpression(children, arrayElemDataType);
        if (ExpressionUtil.isConstant(arrayExpression)) {
            for (int i = 0; i < children.size(); i++) {
                Expression child = children.get(i);
                child.evaluate(null, ptr);
                Object value = arrayElemDataType.toObject(ptr, child.getDataType(), child.getSortOrder());
                elements[i] = LiteralExpression.newConstant(value, child.getDataType(), child.isDeterministic()).getValue();
            }
            Object value = PArrayDataType.instantiatePhoenixArray(arrayElemDataType, elements);
            return LiteralExpression.newConstant(value,

View Full Code Here

            if (postFilter != null) {
                for (Iterator<Tuple> iter = resultQueue.iterator(); iter.hasNext();) {
                    Tuple t = iter.next();
                    ImmutableBytesWritable tempPtr = new ImmutableBytesWritable();
                    try {
                        if (!postFilter.evaluate(t, tempPtr)) {
                            iter.remove();
                            continue;
                        }
                    } catch (IllegalDataException e) {
                        iter.remove();

View Full Code Here

                            Arrays.fill(values, null);
                            int i = 0;
                            List<PColumn> projectedColumns = projectedTable.getColumns();
                            for (; i < projectedTable.getPKColumns().size(); i++) {
                                Expression expression = selectExpressions.get(i);
                                if (expression.evaluate(result, ptr)) {
                                    values[i] = ptr.copyBytes();
                                    // If SortOrder from expression in SELECT doesn't match the
                                    // column being projected into then invert the bits.
                                    if (expression.getSortOrder() != projectedColumns.get(i).getSortOrder()) {
                                        SortOrder.invert(values[i], 0, values[i], 0, values[i].length);

View Full Code Here

                            }
                            projectedTable.newKey(ptr, values);
                            PRow row = projectedTable.newRow(kvBuilder, ts, ptr);
                            for (; i < projectedColumns.size(); i++) {
                                Expression expression = selectExpressions.get(i);
                                if (expression.evaluate(result, ptr)) {
                                    PColumn column = projectedColumns.get(i);
                                    Object value = expression.getDataType().toObject(ptr, column.getSortOrder());
                                    // We are guaranteed that the two column will have the same type.
                                    if (!column.getDataType().isSizeCompatible(ptr, value, column.getDataType(),
                                            expression.getMaxLength(),  expression.getScale(),

View Full Code Here


    @Override
    public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
        // get the dividend
        Expression dividendExpression = getDividendExpression();
        if (!dividendExpression.evaluate(tuple, ptr)) {
            return false;
        }
        if (ptr.getLength() == 0) {
            return true;
        }

View Full Code Here

        }
        long dividend = dividendExpression.getDataType().getCodec().decodeLong(ptr, dividendExpression.getSortOrder());
        
        // get the divisor
        Expression divisorExpression = getDivisorExpression();
        if (!divisorExpression.evaluate(tuple, ptr)) {
            return false;
        }
        if (ptr.getLength() == 0) {
            return true;
        }

View Full Code Here

    }


    @Override
    public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
        Expression offsetExpression = getOffsetExpression();
        if (!offsetExpression.evaluate(tuple,  ptr)) {
            return false;
        }
        int offset = offsetExpression.getDataType().getCodec().decodeInt(ptr, offsetExpression.getSortOrder());
        
        int length = -1;

View Full Code Here

        int offset = offsetExpression.getDataType().getCodec().decodeInt(ptr, offsetExpression.getSortOrder());
        
        int length = -1;
        if (hasLengthExpression) {
            Expression lengthExpression = getLengthExpression();
            if (!lengthExpression.evaluate(tuple, ptr)) {
                return false;
            }
            length = lengthExpression.getDataType().getCodec().decodeInt(ptr, lengthExpression.getSortOrder());
            if (length <= 0) {
                return false;

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.