Examples with Function io.questdb.cairo.sql.Function used on opensource projects

Example 71 with Function

use of io.questdb.cairo.sql.Function in project questdb by bluestreak01.

the class CastShortToSymbolFunctionFactory 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.getShort(null));
        return SymbolConstant.newInstance(sink);
    }
    return new Func(arg);
}

Example 72 with Function

use of io.questdb.cairo.sql.Function in project questdb by bluestreak01.

the class CastDateToSymbolFunctionFactory 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.getDate(null));
        return SymbolConstant.newInstance(sink);
    }
    return new Func(arg);
}

Example 73 with Function

use of io.questdb.cairo.sql.Function in project questdb by bluestreak01.

the class EqStrCharFunctionFactory method newInstance.

@Override
public Function newInstance(int position, ObjList<Function> args, IntList argPositions, CairoConfiguration configuration, SqlExecutionContext sqlExecutionContext) {
    // there are optimisation opportunities
    // 1. when one of args is constant null comparison can boil down to checking
    // length of non-constant (must be -1)
    // 2. when one of arguments is constant, save method call and use a field
    Function strFunc = args.getQuick(0);
    Function charFunc = args.getQuick(1);
    if (ColumnType.isNull(strFunc.getType()) || ColumnType.isNull(charFunc.getType())) {
        return new Func(strFunc, charFunc);
    }
    if (strFunc.isConstant() && !charFunc.isConstant()) {
        CharSequence str = strFunc.getStr(null);
        if (str == null || str.length() != 1) {
            return new NegatedAwareBooleanConstantFunc();
        }
        return new ConstStrFunc(charFunc, str.charAt(0));
    }
    if (!strFunc.isConstant() && charFunc.isConstant()) {
        return new ConstChrFunc(strFunc, charFunc.getChar(null));
    }
    if (strFunc.isConstant() && charFunc.isConstant()) {
        return new ConstStrConstChrFunc(Chars.equalsNc(strFunc.getStr(null), charFunc.getChar(null)));
    }
    return new Func(strFunc, charFunc);
}

Example 74 with Function

use of io.questdb.cairo.sql.Function in project questdb by bluestreak01.

the class ToTimestampVCFunctionFactory method newInstance.

@Override
public Function newInstance(int position, ObjList<Function> args, IntList argPositions, CairoConfiguration configuration, SqlExecutionContext sqlExecutionContext) throws SqlException {
    final Function arg = args.getQuick(0);
    final CharSequence pattern = args.getQuick(1).getStr(null);
    if (pattern == null) {
        throw SqlException.$(argPositions.getQuick(1), "pattern is required");
    }
    return new Func(arg, tlCompiler.get().compile(pattern), configuration.getDefaultDateLocale());
}

Example 75 with Function

use of io.questdb.cairo.sql.Function in project questdb by bluestreak01.

the class ToTimezoneTimestampFunctionFactory method newInstance.

@Override
public Function newInstance(int position, ObjList<Function> args, IntList argPositions, CairoConfiguration configuration, SqlExecutionContext sqlExecutionContext) throws SqlException {
    Function timestamp = args.getQuick(0);
    Function timezone = args.getQuick(1);
    if (timezone.isConstant()) {
        return getTimestampFunction(argPositions, timestamp, timezone, 1);
    } else {
        return new ToTimezoneFunctionVar(timestamp, timezone);
    }
}