Package org.apache.phoenix.expression

Examples of org.apache.phoenix.expression.Expression

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        try {
            DataInputStream input = new DataInputStream(stream);
            while (true) {
                try {
                    int expressionOrdinal = WritableUtils.readVInt(input);
                    Expression expression =
                            ExpressionType.values()[expressionOrdinal].newInstance();
                    expression.readFields(input);
                    expressions.add(expression);
                } catch (EOFException e) {
                    break;
                }
            }
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    private FloorDateExpression(List<Expression> children) {
        super(children);
    }
   
    public static Expression create(List<Expression> children) throws SQLException {
        Expression firstChild = children.get(0);
        PDataType firstChildDataType = firstChild.getDataType();
        if (firstChildDataType == PDataType.TIMESTAMP || firstChildDataType == PDataType.UNSIGNED_TIMESTAMP){
            // Coerce TIMESTAMP to DATE, as the nanos has no affect
            List<Expression> newChildren = Lists.newArrayListWithExpectedSize(children.size());
            newChildren.add(CoerceExpression.create(firstChild, firstChildDataType == PDataType.TIMESTAMP ? PDataType.DATE : PDataType.UNSIGNED_DATE));
            newChildren.addAll(children.subList(1, children.size()));
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     * @param timeUnit - unit of time to round up to
     * @param multiplier - determines the roll up window size.
     * Create a {@link FloorDateExpression}.
     */
    public static Expression create(Expression expr, TimeUnit timeUnit, int multiplier) throws SQLException {
        Expression timeUnitExpr = getTimeUnitExpr(timeUnit);
        Expression defaultMultiplierExpr = getMultiplierExpr(multiplier);
        List<Expression> expressions = Lists.newArrayList(expr, timeUnitExpr, defaultMultiplierExpr);
        return create(expressions);
    }
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     * @param timeUnit - unit of time to round up to
     * @param multiplier - determines the roll up window size.
     * Create a {@link CeilDateExpression}.
     */
    public static Expression create(Expression expr, TimeUnit timeUnit, int multiplier) throws SQLException {
        Expression timeUnitExpr = getTimeUnitExpr(timeUnit);
        Expression defaultMultiplierExpr = getMultiplierExpr(multiplier);
        List<Expression> expressions = Lists.newArrayList(expr, timeUnitExpr, defaultMultiplierExpr);
        return CeilDateExpression.create(expressions);
    }
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    private RoundTimestampExpression(List<Expression> children) {
        super(children);
    }
   
    public static Expression create (List<Expression> children) throws SQLException {
        Expression firstChild = children.get(0);
        PDataType firstChildDataType = firstChild.getDataType();
        String timeUnit = (String)((LiteralExpression)children.get(1)).getValue();
        LiteralExpression multiplierExpr = (LiteralExpression)children.get(2);
       
        /*
         * When rounding off timestamp to milliseconds, nanos play a part only when the multiplier value
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        return true;
    }

    @Override
    public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
        Expression expression = getExpression();
        if (!expression.evaluate(tuple, ptr) || ptr.getLength() == 0) {
            return false;
        }
        PDataType type = expression.getDataType();
        String dateStr = (String)type.toObject(ptr, expression.getSortOrder());
        try {
            Object value = dateParser.parseObject(dateStr);
            byte[] byteValue = getDataType().toBytes(value);
            ptr.set(byteValue);
            return true;
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        super(children);
    }
   
    @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;
        }
        int sqlType = child.getDataType().getCodec().decodeInt(ptr, child.getSortOrder());
        try {
            byte[] sqlTypeNameBytes = PDataType.fromTypeId(sqlType).getSqlTypeNameBytes();
            ptr.set(sqlTypeNameBytes);
        } catch (IllegalDataException e) {
            ptr.set(ByteUtil.EMPTY_BYTE_ARRAY);
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        String sourceStr = (String)PDataType.VARCHAR.toObject(ptr, getSourceStrExpression().getSortOrder());
        if (sourceStr == null) {
            return false;
        }

        Expression offsetExpression = getOffsetExpression();
        if (!offsetExpression.evaluate(tuple, ptr)) {
            return false;
        }
        int offset = offsetExpression.getDataType().getCodec().decodeInt(ptr, offsetExpression.getSortOrder());

        int strlen = sourceStr.length();
        // Account for 1 versus 0-based offset
        offset = offset - (offset <= 0 ? 0 : 1);
        if (offset < 0) { // Offset < 0 means get from end
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    super(children);
  }

  @Override
  public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
    Expression arrayExpr = children.get(0);
    if (!arrayExpr.evaluate(tuple, ptr)) {
      return false;
    } else if (ptr.getLength() == 0) {
      return true;
    }
    PDataType baseType = PDataType.fromTypeId(children.get(0).getDataType()
        .getSqlType()
        - PDataType.ARRAY_TYPE_BASE);
    int length = PArrayDataType.getArrayLength(ptr, baseType, arrayExpr.getMaxLength());
    byte[] lengthBuf = new byte[PDataType.INTEGER.getByteSize()];
    PDataType.INTEGER.getCodec().encodeInt(length, lengthBuf, 0);
    ptr.set(lengthBuf);
    return true;
  }
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        super(children);
    }
   
    @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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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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