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

Example 6 with Value

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

the class ExpressionColumn method updateAggregate.

@Override
public void updateAggregate(Session session) {
    Value now = columnResolver.getValue(column);
    Select select = columnResolver.getSelect();
    if (select == null) {
        throw DbException.get(ErrorCode.MUST_GROUP_BY_COLUMN_1, getSQL());
    }
    HashMap<Expression, Object> values = select.getCurrentGroup();
    if (values == null) {
        // this is a different level (the enclosing query)
        return;
    }
    Value v = (Value) values.get(this);
    if (v == null) {
        values.put(this, now);
    } else {
        if (!database.areEqual(now, v)) {
            throw DbException.get(ErrorCode.MUST_GROUP_BY_COLUMN_1, getSQL());
        }
    }
}

Example 7 with Value

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

the class ExpressionColumn method exportParameters.

@Override
public String exportParameters(TableFilter filter, List<Value> container) {
    if (getTableFilter() == filter) {
        return getSQL();
    }
    Value value = this.getValue(filter.getSession());
    container.add(value);
    return "?";
}

Example 8 with Value

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

the class ExpressionColumn method getValue.

@Override
public Value getValue(Session session) {
    Select select = columnResolver.getSelect();
    if (select != null) {
        HashMap<Expression, Object> values = select.getCurrentGroup();
        if (values != null) {
            Value v = (Value) values.get(this);
            if (v != null) {
                return v;
            }
        }
    }
    Value value = columnResolver.getValue(column);
    if (value == null) {
        columnResolver.getValue(column);
        throw DbException.get(ErrorCode.MUST_GROUP_BY_COLUMN_1, getSQL());
    }
    return value;
}

Example 9 with Value

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

the class AggregateDataHistogram method getValue.

@Override
Value getValue(Database database, int dataType, boolean distinct) {
    if (distinct) {
        count = 0;
        groupDistinct(database, dataType);
    }
    ValueArray[] values = new ValueArray[distinctValues.size()];
    int i = 0;
    for (Value dv : distinctValues.keys()) {
        AggregateDataHistogram d = distinctValues.get(dv);
        values[i] = ValueArray.get(new Value[] { dv, ValueLong.get(d.count) });
        i++;
    }
    final CompareMode compareMode = database.getCompareMode();
    Arrays.sort(values, new Comparator<ValueArray>() {

        @Override
        public int compare(ValueArray v1, ValueArray v2) {
            Value a1 = v1.getList()[0];
            Value a2 = v2.getList()[0];
            return a1.compareTo(a2, compareMode);
        }
    });
    Value v = ValueArray.get(values);
    return v.convertTo(dataType);
}

Example 10 with Value

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

the class AggregateDataSelectivity method getValue.

@Override
Value getValue(Database database, int dataType, boolean distinct) {
    if (distinct) {
        count = 0;
    }
    Value v = null;
    int s = 0;
    if (count == 0) {
        s = 0;
    } else {
        m2 += distinctHashes.size();
        m2 = 100 * m2 / count;
        s = (int) m2;
        s = s <= 0 ? 1 : s > 100 ? 100 : s;
    }
    v = ValueInt.get(s);
    return v.convertTo(dataType);
}