Examples with Value com.wplatform.ddal.value.Value used on opensource projects

Example 46 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class ConditionNot method optimize.

@Override
public Expression optimize(Session session) {
    Expression e2 = condition.getNotIfPossible(session);
    if (e2 != null) {
        return e2.optimize(session);
    }
    Expression expr = condition.optimize(session);
    if (expr.isConstant()) {
        Value v = expr.getValue(session);
        if (v == ValueNull.INSTANCE) {
            return ValueExpression.getNull();
        }
        return ValueExpression.get(v.convertTo(Value.BOOLEAN).negate());
    }
    condition = expr;
    return this;
}

Example 47 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class ResultDiskBuffer method readRow.

private void readRow(ResultDiskTape tape) {
    int min = Constants.FILE_BLOCK_SIZE;
    Data buff = rowBuff;
    buff.reset();
    readFully(buff.getBytes(), 0, min);
    int len = buff.readInt();
    buff.checkCapacity(len);
    if (len - min > 0) {
        readFully(buff.getBytes(), min, len - min);
    }
    tape.pos += len;
    Value[] row = new Value[columnCount];
    for (int k = 0; k < columnCount; k++) {
        row[k] = buff.readValue();
    }
    tape.buffer.add(row);
}

Example 48 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class ResultDiskBuffer method addRows.

public int addRows(ArrayList<Value[]> rows) {
    if (sort != null) {
        sort.sort(rows);
    }
    Data buff = rowBuff;
    long start = getFilePointer();
    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    int bufferLen = 0;
    for (Value[] row : rows) {
        buff.reset();
        buff.writeInt(0);
        for (int j = 0; j < columnCount; j++) {
            Value v = row[j];
            buff.checkCapacity(Data.getValueLen(v));
            buff.writeValue(v);
        }
        buff.fillAligned();
        int len = buff.length();
        buff.setInt(0, len);
        if (maxBufferSize > 0) {
            buffer.write(buff.getBytes(), 0, len);
            bufferLen += len;
            if (bufferLen > maxBufferSize) {
                byte[] data = buffer.toByteArray();
                buffer.reset();
                write(data, 0, data.length);
                bufferLen = 0;
            }
        } else {
            write(buff.getBytes(), 0, len);
        }
    }
    if (bufferLen > 0) {
        byte[] data = buffer.toByteArray();
        write(data, 0, data.length);
    }
    if (sort != null) {
        ResultDiskTape tape = new ResultDiskTape();
        tape.start = start;
        tape.end = getFilePointer();
        tapes.add(tape);
    } else {
        mainTape.end = getFilePointer();
    }
    rowCount += rows.size();
    return rowCount;
}

Example 49 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class Row method toString.

@Override
public String toString() {
    StatementBuilder buff = new StatementBuilder("( /* key:");
    buff.append(getKey());
    if (version != 0) {
        buff.append(" v:" + version);
    }
    if (isDeleted()) {
        buff.append(" deleted");
    }
    buff.append(" */ ");
    if (data != null) {
        for (Value v : data) {
            buff.appendExceptFirst(", ");
            buff.append(v == null ? "null" : v.getTraceSQL());
        }
    }
    return buff.append(')').toString();
}

Example 50 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class Row method getMemory.

@Override
public int getMemory() {
    if (memory != MEMORY_CALCULATE) {
        return memory;
    }
    int m = Constants.MEMORY_ROW;
    if (data != null) {
        int len = data.length;
        m += Constants.MEMORY_OBJECT + len * Constants.MEMORY_POINTER;
        for (int i = 0; i < len; i++) {
            Value v = data[i];
            if (v != null) {
                m += v.getMemory();
            }
        }
    }
    this.memory = m;
    return m;
}