Examples with StringSink io.questdb.std.str.StringSink used on opensource projects

Example 61 with StringSink

use of io.questdb.std.str.StringSink in project questdb by questdb.

the class SqlOptimiser method doReplaceLiteral0.

private ExpressionNode doReplaceLiteral0(ExpressionNode node, QueryModel translatingModel, @Nullable QueryModel innerModel, QueryModel validatingModel) throws SqlException {
    final LowerCaseCharSequenceObjHashMap<CharSequence> map = translatingModel.getColumnNameToAliasMap();
    int index = map.keyIndex(node.token);
    if (index > -1) {
        // there is a possibility that column references join table, but in a different way
        // for example. main column could be tab1.y and the "missing" one just "y"
        // which is the same thing.
        // To disambiguate this situation we need to go over all join tables and see if the
        // column matches any of join tables unambiguously.
        final int joinCount = validatingModel.getJoinModels().size();
        if (joinCount > 1) {
            boolean found = false;
            final StringSink sink = Misc.getThreadLocalBuilder();
            sink.clear();
            for (int i = 0; i < joinCount; i++) {
                final QueryModel jm = validatingModel.getJoinModels().getQuick(i);
                if (jm.getAliasToColumnMap().keyIndex(node.token) < 0) {
                    if (found) {
                        throw SqlException.ambiguousColumn(node.position);
                    }
                    if (jm.getAlias() != null) {
                        sink.put(jm.getAlias().token);
                    } else {
                        sink.put(jm.getTableName().token);
                    }
                    sink.put('.');
                    sink.put(node.token);
                    if ((index = map.keyIndex(sink)) < 0) {
                        found = true;
                    }
                }
            }
            if (found) {
                return nextLiteral(map.valueAtQuick(index), node.position);
            }
        }
        // this is the first time we see this column and must create alias
        CharSequence alias = createColumnAlias(node, translatingModel);
        QueryColumn column = queryColumnPool.next().of(alias, node);
        // add column to both models
        addColumnToTranslatingModel(column, translatingModel, validatingModel);
        if (innerModel != null) {
            innerModel.addBottomUpColumn(column);
        }
        return nextLiteral(alias, node.position);
    }
    return nextLiteral(map.valueAtQuick(index), node.position);
}

Example 62 with StringSink

use of io.questdb.std.str.StringSink in project questdb by questdb.

the class CastDoubleToStrFunctionFactory method newInstance.

@Override
public Function newInstance(int position, ObjList<Function> args, IntList argPositions, CairoConfiguration configuration, SqlExecutionContext sqlExecutionContext) {
    Function intFunc = args.getQuick(0);
    if (intFunc.isConstant()) {
        final StringSink sink = Misc.getThreadLocalBuilder();
        sink.put(intFunc.getDouble(null), configuration.getDoubleToStrCastScale());
        return new StrConstant(Chars.toString(sink));
    }
    return new Func(args.getQuick(0), configuration.getDoubleToStrCastScale());
}

Example 63 with StringSink

use of io.questdb.std.str.StringSink in project questdb by questdb.

the class CastDoubleToSymbolFunctionFactory method newInstance.

@Override
public Function newInstance(int position, ObjList<Function> args, IntList argPositions, CairoConfiguration configuration, SqlExecutionContext sqlExecutionContext) {
    final Function arg = args.getQuick(0);
    if (arg.isConstant()) {
        final StringSink sink = Misc.getThreadLocalBuilder();
        sink.put(arg.getDouble(null), configuration.getDoubleToStrCastScale());
        return SymbolConstant.newInstance(sink);
    }
    return new Func(arg, configuration.getDoubleToStrCastScale());
}

Example 64 with StringSink

use of io.questdb.std.str.StringSink in project questdb by questdb.

the class CastTimestampToSymbolFunctionFactory method newInstance.

@Override
public Function newInstance(int position, ObjList<Function> args, IntList argPositions, CairoConfiguration configuration, SqlExecutionContext sqlExecutionContext) {
    final Function arg = args.getQuick(0);
    if (arg.isConstant()) {
        final StringSink sink = Misc.getThreadLocalBuilder();
        sink.put(arg.getTimestamp(null));
        return SymbolConstant.newInstance(sink);
    }
    return new Func(arg);
}

Example 65 with StringSink

use of io.questdb.std.str.StringSink in project questdb by questdb.

the class CastShortToStrFunctionFactory method newInstance.

@Override
public Function newInstance(int position, ObjList<Function> args, IntList argPositions, CairoConfiguration configuration, SqlExecutionContext sqlExecutionContext) {
    Function intFunc = args.getQuick(0);
    if (intFunc.isConstant()) {
        final StringSink sink = Misc.getThreadLocalBuilder();
        sink.put(intFunc.getShort(null));
        return new StrConstant(Chars.toString(sink));
    }
    return new Func(args.getQuick(0));
}