Examples of com.salesforce.phoenix.schema.KeyValueSchema

com.salesforce.phoenix.schema.KeyValueSchema
Simple flat schema over a byte array where fields may be any of {@link PDataType}. Optimized for positional access by index. @author jtaylor @since 0.1

  }


    @Override
    public void readFields(DataInput input) throws IOException {
        super.readFields(input);
        schema = new KeyValueSchema();
        schema.readFields(input);
        bitSet = ValueBitSet.newInstance(schema);
        position = input.readInt();
        name = Bytes.readByteArray(input);
    }

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            return null;
        }
        ByteArrayInputStream stream = new ByteArrayInputStream(join);
        try {
            DataInputStream input = new DataInputStream(stream);
            KeyValueSchema joinedSchema = new KeyValueSchema();
            joinedSchema.readFields(input);
            int count = WritableUtils.readVInt(input);
            ImmutableBytesPtr[] joinIds = new ImmutableBytesPtr[count];
            List<Expression>[] joinExpressions = new List[count];
            JoinType[] joinTypes = new JoinType[count];
            boolean[] earlyEvaluation = new boolean[count];
            KeyValueSchema[] schemas = new KeyValueSchema[count];
            int[] fieldPositions = new int[count];
            for (int i = 0; i < count; i++) {
                joinIds[i] = new ImmutableBytesPtr();
                joinIds[i].readFields(input);
                int nExprs = WritableUtils.readVInt(input);
                joinExpressions[i] = new ArrayList<Expression>(nExprs);
                for (int j = 0; j < nExprs; j++) {
                    int expressionOrdinal = WritableUtils.readVInt(input);
                    Expression expression = ExpressionType.values()[expressionOrdinal].newInstance();
                    expression.readFields(input);
                    joinExpressions[i].add(expression);                    
                }
                int type = WritableUtils.readVInt(input);
                joinTypes[i] = JoinType.values()[type];
                earlyEvaluation[i] = input.readBoolean();
                schemas[i] = new KeyValueSchema();
                schemas[i].readFields(input);
                fieldPositions[i] = WritableUtils.readVInt(input);
            }
            Expression postJoinFilterExpression = null;
            int expressionOrdinal = WritableUtils.readVInt(input);

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            return null;
        }
        ByteArrayInputStream stream = new ByteArrayInputStream(proj);
        try {
            DataInputStream input = new DataInputStream(stream);
            KeyValueSchema schema = new KeyValueSchema();
            schema.readFields(input);
            int count = WritableUtils.readVInt(input);
            Expression[] expressions = new Expression[count];
            for (int i = 0; i < count; i++) {
              int ordinal = WritableUtils.readVInt(input);
              expressions[i] = ExpressionType.values()[ordinal].newInstance();

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                cont = false;
                break;
            }
        }
        if (cont) {
            KeyValueSchema schema = joinInfo.getJoinedSchema();
            resultQueue.offer(tuple);
            for (int i = 0; i < count; i++) {
                boolean earlyEvaluation = joinInfo.earlyEvaluation()[i];
                if (earlyEvaluation && 
                        (tempTuples[i] == null || tempTuples[i].isEmpty()))

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                    KeyValueUtil.newKeyValue(ptr.get(), ptr.getOffset(), ptr.getLength(),
                        QueryConstants.SINGLE_COLUMN_FAMILY, QueryConstants.SINGLE_COLUMN,
                        QueryConstants.AGG_TIMESTAMP, data, vIntKeyLength + keyLength + vIntValLength, valueLength);
            Tuple result = new SingleKeyValueTuple(keyValue);
            TupleUtil.getAggregateValue(result, ptr);
            KeyValueSchema schema = aggregators.getValueSchema();
            ValueBitSet tempValueSet = ValueBitSet.newInstance(schema);
            tempValueSet.clear();
            tempValueSet.or(ptr);


            int i = 0, maxOffset = ptr.getOffset() + ptr.getLength();
            SingleAggregateFunction[] funcArray = aggregators.getFunctions();
            Aggregator[] sAggs = new Aggregator[funcArray.length];
            Boolean hasValue;
            schema.iterator(ptr);
            while ((hasValue = schema.next(ptr, i, maxOffset, tempValueSet)) != null) {
                SingleAggregateFunction func = funcArray[i];
                sAggs[i++] =
                        hasValue ? func.newServerAggregator(conf, ptr) : func
                                .newServerAggregator(conf);
            }

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Related Classes of com.salesforce.phoenix.schema.KeyValueSchema

com.salesforce.phoenix.cache.aggcache.SpillManager

com.salesforce.phoenix.coprocessor.HashJoinRegionScanner

com.salesforce.phoenix.expression.ProjectedColumnExpression

com.salesforce.phoenix.join.HashJoinInfo

com.salesforce.phoenix.join.ScanProjector

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