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 = children.get(0);
        if (!child.evaluate(tuple, ptr)) {
            return false;
        }
        if (ptr.getLength() == 0) {
            return true;
        }

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        Expression expression = node.create(children, context);
        ImmutableBytesWritable ptr = context.getTempPtr();
        if (node.isStateless()) {
            Object value = null;
            PDataType type = expression.getDataType();
            if (expression.evaluate(null, ptr)) {
                value = type.toObject(ptr);
            }
            return LiteralExpression.newConstant(value, type, expression.isDeterministic());
        }
        boolean isDeterministic = true;

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        ExpressionCompiler expressionCompiler = new ExpressionCompiler(context);
        for (int i = 0; i < splits.length; i++) {
            ParseNode node = splitNodes.get(i);
            if (node.isStateless()) {
                Expression expression = node.accept(expressionCompiler);
                if (expression.evaluate(null, ptr)) {;
                    splits[i] = ByteUtil.copyKeyBytesIfNecessary(ptr);
                    continue;
                }
            }
            throw new SQLExceptionInfo.Builder(SQLExceptionCode.SPLIT_POINT_NOT_CONSTANT)

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            context.getBindManager().addParamMetaData((BindParseNode)cacheNode, INTEGER_DATUM);
        }
        ExpressionCompiler expressionCompiler = new ExpressionCompiler(context);
        Expression startsWithExpr = startsWithNode.accept(expressionCompiler);
        ImmutableBytesWritable ptr = context.getTempPtr();
        startsWithExpr.evaluate(null, ptr);
        if (ptr.getLength() == 0 || !startsWithExpr.getDataType().isCoercibleTo(PDataType.LONG)) {
            throw new SQLExceptionInfo.Builder(SQLExceptionCode.STARTS_WITH_MUST_BE_CONSTANT)
            .setSchemaName(sequence.getSequenceName().getSchemaName())
            .setTableName(sequence.getSequenceName().getTableName()).build().buildException();
        }

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            .setTableName(sequence.getSequenceName().getTableName()).build().buildException();
        }
        final long startsWith = (Long)PDataType.LONG.toObject(ptr, startsWithExpr.getDataType());


        Expression incrementByExpr = incrementByNode.accept(expressionCompiler);
        incrementByExpr.evaluate(null, ptr);
        if (ptr.getLength() == 0 || !incrementByExpr.getDataType().isCoercibleTo(PDataType.LONG)) {
            throw new SQLExceptionInfo.Builder(SQLExceptionCode.INCREMENT_BY_MUST_BE_CONSTANT)
            .setSchemaName(sequence.getSequenceName().getSchemaName())
            .setTableName(sequence.getSequenceName().getTableName()).build().buildException();
        }

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        final long incrementBy = (Long)PDataType.LONG.toObject(ptr, incrementByExpr.getDataType());
        
        long cacheSizeValue = connection.getQueryServices().getProps().getLong(QueryServices.SEQUENCE_CACHE_SIZE_ATTRIB,QueryServicesOptions.DEFAULT_SEQUENCE_CACHE_SIZE);
        if (cacheNode != null) {
            Expression cacheSizeExpr = cacheNode.accept(expressionCompiler);
            cacheSizeExpr.evaluate(null, ptr);
            if (ptr.getLength() != 0 && (!cacheSizeExpr.getDataType().isCoercibleTo(PDataType.LONG) || (cacheSizeValue = (Long)PDataType.LONG.toObject(ptr, cacheSizeExpr.getDataType())) < 0)) {
                throw new SQLExceptionInfo.Builder(SQLExceptionCode.CACHE_MUST_BE_NON_NEGATIVE_CONSTANT)
                .setSchemaName(sequence.getSequenceName().getSchemaName())
                .setTableName(sequence.getSequenceName().getTableName()).build().buildException();
            }

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            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();

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                            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);

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                            }
                            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(),

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    }


    @Override
    public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
        Expression childExpr = children.get(0);
        if(childExpr.evaluate(tuple, ptr)) {
            BigDecimal value = (BigDecimal)PDataType.DECIMAL.toObject(ptr, childExpr.getSortOrder());
            BigDecimal scaledValue = value.setScale(scale, getRoundingMode());
            ptr.set(getDataType().toBytes(scaledValue));
            return true;
        }

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