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

    }


    @Override
    public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
        Expression child = getStringExpression();
        if (!child.evaluate(tuple, ptr)) {
            return false;
        }
        if (ptr.getLength() == 0) {
            ptr.set(ByteUtil.EMPTY_BYTE_ARRAY);
            return true;

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    }


    @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;

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        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;

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            // returning null. We have to wait until after we create the function expression so that
            // we can get the proper type to use.
            if (node.evalToNullIfParamIsNull(context, i)) {
                Expression child = children.get(i);
                isDeterministic &= child.isDeterministic();
                if (child.isStateless() && (!child.evaluate(null, ptr) || ptr.getLength() == 0)) {
                    return LiteralExpression.newConstant(null, expression.getDataType(), isDeterministic);
                }
            }
        }
        expression = addExpression(expression);

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            }
        }
        Expression expression = new LikeExpression(children);
        if (node.isStateless()) {
            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());
            }
        }

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        ImmutableBytesWritable ptr = context.getTempPtr();


        // If all children are literals, just evaluate now
        if (expression.isStateless()) {
            if (!expression.evaluate(null,ptr) || ptr.getLength() == 0) {
                return LiteralExpression.newConstant(null, expression.getDataType(), expression.isDeterministic());
            }
            return LiteralExpression.newConstant(expression.getDataType().toObject(ptr), expression.getDataType(), expression.isDeterministic());
        } else if (isNull) {
            return LiteralExpression.newConstant(null, expression.getDataType(), expression.isDeterministic());

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        if (node.isStateless()) {
            boolean isDeterministic = true;
            for (int i = 0; i < children.size(); i++) {
                Expression child = children.get(i);
                isDeterministic &= child.isDeterministic();
                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,

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  }


  @Override
  public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
    Expression indexExpr = children.get(1);
    if (!indexExpr.evaluate(tuple, ptr)) {
      return false;
    } else if (ptr.getLength() == 0) {
      return true;
    }
    // Use Codec to prevent Integer object allocation

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    int index = PDataType.INTEGER.getCodec().decodeInt(ptr, indexExpr.getSortOrder());
    if(index < 0) {
      throw new ParseException("Index cannot be negative :" + index);
    }
    Expression arrayExpr = children.get(0);
    if (!arrayExpr.evaluate(tuple, ptr)) {
      return false;
    } else if (ptr.getLength() == 0) {
      return true;
    }

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            for (int i = 0; i < targetColumns.size(); i++) {
                PColumn targetColumn = targetColumns.get(i);
                if (overlapViewColumns.contains(targetColumn)) {
                    Expression source = projector.getColumnProjector(i).getExpression();
                    if (source.isStateless()) {
                        source.evaluate(null, ptr);
                        if (Bytes.compareTo(ptr.get(), ptr.getOffset(), ptr.getLength(), targetColumn.getViewConstant(), 0, targetColumn.getViewConstant().length-1) == 0) {
                            continue;
                        }
                    }
                    throw new SQLExceptionInfo.Builder(

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