Package org.apache.phoenix.expression

Examples of org.apache.phoenix.expression.Expression

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        this.index = index;
    }

    @Override
    public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
        Expression arrayExpr = children.get(0);
        return PArrayDataType.positionAtArrayElement(tuple, ptr, index, arrayExpr, getDataType(), getMaxLength());
    }
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                        } else if (isUpsert) {
                            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);
                                    }
                                }
                            }
                            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(),
                                            column.getMaxLength(), column.getScale())) {
                                        throw new ValueTypeIncompatibleException(column.getDataType(),
                                                column.getMaxLength(), column.getScale());
                                    }
                                    column.getDataType().coerceBytes(ptr, value, expression.getDataType(),
                                            expression.getMaxLength(), expression.getScale(), expression.getSortOrder(),
                                            column.getMaxLength(), column.getScale(), column.getSortOrder());
                                    byte[] bytes = ByteUtil.copyKeyBytesIfNecessary(ptr);
                                    row.setValue(column, bytes);
                                }
                            }
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    public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
        // Can't parse if there is no replacement pattern.
        if (pattern == null) {
            return false;
        }
        Expression sourceStrExpression = getSourceStrExpression();
        if (!sourceStrExpression.evaluate(tuple, ptr)) {
            return false;
        }
        String sourceStr = (String)PDataType.VARCHAR.toObject(ptr, sourceStrExpression.getSortOrder());
        if (sourceStr == null) {
            return false;
        }
        String replaceStr;
        if (hasReplaceStr) {
            Expression replaceStrExpression = this.getReplaceStrExpression();
            if (!replaceStrExpression.evaluate(tuple, ptr)) {
                return false;
            }
            replaceStr = (String)PDataType.VARCHAR.toObject(ptr, replaceStrExpression.getSortOrder());
        } else {
            replaceStr = "";
        }
        String replacedStr = pattern.matcher(sourceStr).replaceAll(replaceStr);
        ptr.set(PDataType.VARCHAR.toBytes(replacedStr));
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            DataInputStream input = new DataInputStream(stream);
            int size = WritableUtils.readVInt(input);
            List<Expression> selectExpressions = Lists.newArrayListWithExpectedSize(size);
            for (int i = 0; i < size; i++) {
                ExpressionType type = ExpressionType.values()[WritableUtils.readVInt(input)];
                Expression selectExpression = type.newInstance();
                selectExpression.readFields(input);
                selectExpressions.add(selectExpression);
            }
            return selectExpressions;
        } catch (IOException e) {
            throw new RuntimeException(e);
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        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        try {
            DataOutputStream output = new DataOutputStream(stream);
            WritableUtils.writeVInt(output, selectExpressions.size());
            for (int i = 0; i < selectExpressions.size(); i++) {
                Expression expression = selectExpressions.get(i);
                WritableUtils.writeVInt(output, ExpressionType.valueOf(expression).ordinal());
                expression.write(output);
            }
            return stream.toByteArray();
        } catch (IOException e) {
            throw new RuntimeException(e);
        } finally {
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     */
    public static Expression create(Expression expr, int scale) throws SQLException {
        if (expr.getDataType().isCoercibleTo(PDataType.LONG)) {
            return expr;
        }
        Expression scaleExpr = LiteralExpression.newConstant(scale, PDataType.INTEGER, true);
        List<Expression> expressions = Lists.newArrayList(expr, scaleExpr);
        return new RoundDecimalExpression(expressions);
    }
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    public static Expression create(Expression expr) throws SQLException {
        return create(expr, 0);
    }
   
    public static Expression create(List<Expression> exprs) throws SQLException {
        Expression expr = exprs.get(0);
        if (expr.getDataType().isCoercibleTo(PDataType.LONG)) {
            return expr;
        }
        if (exprs.size() == 1) {
            Expression scaleExpr = LiteralExpression.newConstant(0, PDataType.INTEGER, true);
            exprs = Lists.newArrayList(expr, scaleExpr);
        }
        return new RoundDecimalExpression(exprs);
    }
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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.getDataType(), childExpr.getSortOrder());
            BigDecimal scaledValue = value.setScale(scale, getRoundingMode());
            ptr.set(PDataType.DECIMAL.toBytes(scaledValue));
            return true;
        }
        return false;
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        return children.get(0);
    }

    @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;
        }
        int len;
        if (child.getDataType() == PDataType.CHAR) {
            // Only single-byte characters allowed in CHAR
            len = ptr.getLength();
        } else {
            try {
                len = StringUtil.calculateUTF8Length(ptr.get(), ptr.getOffset(), ptr.getLength(), child.getSortOrder());
            } catch (UndecodableByteException e) {
                return false;
            }
        }
        ptr.set(PDataType.INTEGER.toBytes(len));
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    super(children);
  }

  @Override
  public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
    Expression expression = getExpression();
    if (!expression.evaluate(tuple, ptr)) {
      return false;
    }
    if (ptr.getLength() == 0) {
      return true; // expression was evaluated, but evaluated to null
    }

    PDataType type = expression.getDataType();
    String stringToDecode = (String) type.toObject(ptr);

    Expression encodingExpression = getEncodingExpression();
    if (!encodingExpression.evaluate(tuple, ptr)) {
      return false;
    }

    if (ptr.getLength() == 0) {
      throw new IllegalDataException("Missing bytes encoding.");
    }

    type = encodingExpression.getDataType();
    String encoding = ((String) type.toObject(ptr)).toUpperCase();

    byte out[];

    EncodeFormat format = EncodeFormat.valueOf(encoding);
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Related Classes of org.apache.phoenix.expression.Expression

  • org.apache.phoenix.compile.CreateSequenceCompiler
  • org.apache.phoenix.compile.CreateTableCompiler
  • org.apache.phoenix.compile.ExpressionCompiler
  • org.apache.phoenix.compile.ExpressionManager
  • org.apache.phoenix.compile.ExpressionProjector
  • org.apache.phoenix.compile.GroupByCompiler
  • org.apache.phoenix.compile.HavingClauseTest
  • org.apache.phoenix.compile.HavingCompiler
  • org.apache.phoenix.compile.HavingCompilerTest
  • org.apache.phoenix.compile.JoinCompiler$JoinSpec
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