Examples with Value org.gridgain.internal.h2.value.Value used on opensource projects

Example 26 with Value

use of org.gridgain.internal.h2.value.Value in project ignite by apache.

the class MapQueryResult method fetchNextPage.

/**
 * @param rows Collection to fetch into.
 * @param pageSize Page size.
 * @param dataPageScanEnabled If data page scan is enabled.
 * @return {@code true} If there are no more rows available.
 */
boolean fetchNextPage(List<Value[]> rows, int pageSize, Boolean dataPageScanEnabled) {
    assert lock.isHeldByCurrentThread();
    if (closed)
        return true;
    assert res != null;
    boolean readEvt = cctx != null && cctx.name() != null && cctx.events().isRecordable(EVT_CACHE_QUERY_OBJECT_READ);
    QueryContext.threadLocal(H2Utils.context(ses));
    page++;
    h2.enableDataPageScan(dataPageScanEnabled);
    try {
        for (int i = 0; i < pageSize; i++) {
            if (!res.res.next())
                return true;
            Value[] row = res.res.currentRow();
            if (cpNeeded) {
                boolean copied = false;
                for (int j = 0; j < row.length; j++) {
                    Value val = row[j];
                    if (val instanceof GridH2ValueCacheObject) {
                        GridH2ValueCacheObject valCacheObj = (GridH2ValueCacheObject) val;
                        row[j] = new GridH2ValueCacheObject(valCacheObj.getCacheObject(), h2.objectContext()) {

                            @Override
                            public Object getObject() {
                                return getObject(true);
                            }
                        };
                        copied = true;
                    }
                }
                if (i == 0 && !copied)
                    // No copy on read caches, skip next checks.
                    cpNeeded = false;
            }
            assert row != null;
            if (readEvt) {
                GridKernalContext ctx = h2.kernalContext();
                ctx.event().record(new CacheQueryReadEvent<>(ctx.discovery().localNode(), "SQL fields query result set row read.", EVT_CACHE_QUERY_OBJECT_READ, CacheQueryType.SQL.name(), cctx.name(), null, qry.query(), null, null, params, qrySrcNodeId, null, null, null, null, row(row)));
            }
            rows.add(res.res.currentRow());
            res.fetchSizeInterceptor.checkOnFetchNext();
        }
        return !res.res.hasNext();
    } finally {
        CacheDataTree.setDataPageScanEnabled(false);
    }
}

Example 27 with Value

use of org.gridgain.internal.h2.value.Value in project ignite by apache.

the class SqlAbstractLocalSystemView method createRow.

/**
 * @param ses Session.
 * @param data Data for each column.
 */
protected Row createRow(Session ses, Object... data) {
    Value[] values = new Value[data.length];
    for (int i = 0; i < data.length; i++) {
        Object o = data[i];
        Value v = (o == null) ? ValueNull.INSTANCE : (o instanceof Value) ? (Value) o : ValueString.get(o.toString());
        values[i] = cols[i].convert(v);
    }
    return ses.getDatabase().createRow(values, 0);
}

Example 28 with Value

use of org.gridgain.internal.h2.value.Value in project ignite by apache.

the class SortedReduceIndexAdapter method compareRows.

/**
 * {@inheritDoc}
 */
@Override
public int compareRows(SearchRow rowData, SearchRow compare) {
    if (rowData == compare)
        return 0;
    for (int i = 0, len = indexColumns.length; i < len; i++) {
        int index = columnIds[i];
        int sortType = indexColumns[i].sortType;
        Value v1 = rowData.getValue(index);
        Value v2 = compare.getValue(index);
        if (v1 == null || v2 == null)
            return 0;
        else if (v1 == v2)
            continue;
        else if (v1 == ValueNull.INSTANCE || v2 == ValueNull.INSTANCE) {
            if ((sortType & SortOrder.NULLS_FIRST) != 0)
                return v1 == ValueNull.INSTANCE ? -1 : 1;
            else if ((sortType & SortOrder.NULLS_LAST) != 0)
                return v1 == ValueNull.INSTANCE ? 1 : -1;
        }
        int comp = table.compareTypeSafe(v1, v2);
        if ((sortType & SortOrder.DESCENDING) != 0)
            comp = -comp;
        if (comp != 0)
            return comp;
    }
    return 0;
}

Example 29 with Value

use of org.gridgain.internal.h2.value.Value in project ignite by apache.

the class H2TreeIndex method toSearchRow.

/**
 * @param msg Row message.
 * @return Search row.
 */
private SearchRow toSearchRow(GridH2RowMessage msg) {
    if (msg == null)
        return null;
    Value[] vals = new Value[getTable().getColumns().length];
    assert vals.length > 0;
    List<GridH2ValueMessage> msgVals = msg.values();
    for (int i = 0; i < indexColumns.length; i++) {
        if (i >= msgVals.size())
            continue;
        try {
            vals[indexColumns[i].column.getColumnId()] = msgVals.get(i).value(ctx);
        } catch (IgniteCheckedException e) {
            throw new CacheException(e);
        }
    }
    return database.createRow(vals, MEMORY_CALCULATE);
}

Example 30 with Value

use of org.gridgain.internal.h2.value.Value in project ignite by apache.

the class DmlAstUtils method elementOrDefault.

/**
 * Do what we can to compute default value for this column (mimics H2 behavior).
 * @see Table#getDefaultValue
 * @see Column#validateConvertUpdateSequence
 * @param el SQL element.
 * @param col Column.
 * @return {@link GridSqlConst#NULL}, if {@code el} is null, or {@code el} if
 * it's not {@link GridSqlKeyword#DEFAULT}, or computed default value.
 */
private static GridSqlElement elementOrDefault(GridSqlElement el, GridSqlColumn col) {
    if (el == null)
        return GridSqlConst.NULL;
    if (el != GridSqlKeyword.DEFAULT)
        return el;
    Column h2Col = col.column();
    Expression dfltExpr = h2Col.getDefaultExpression();
    Value dfltVal;
    try {
        dfltVal = dfltExpr != null ? dfltExpr.getValue(null) : null;
    } catch (Exception ignored) {
        throw new IgniteSQLException("Failed to evaluate default value for a column " + col.columnName());
    }
    if (dfltVal != null)
        return new GridSqlConst(dfltVal);
    int type = h2Col.getType();
    DataType dt = DataType.getDataType(type);
    if (dt.decimal)
        dfltVal = ValueInt.get(0).convertTo(type);
    else if (dt.type == Value.TIMESTAMP)
        dfltVal = ValueTimestamp.fromMillis(U.currentTimeMillis());
    else if (dt.type == Value.TIME)
        dfltVal = ValueTime.fromNanos(0);
    else if (dt.type == Value.DATE)
        dfltVal = ValueDate.fromMillis(U.currentTimeMillis());
    else
        dfltVal = ValueString.get("").convertTo(type);
    return new GridSqlConst(dfltVal);
}