Examples with AsterixConstantValue org.apache.asterix.om.constants.AsterixConstantValue used on opensource projects

Example 31 with AsterixConstantValue

use of org.apache.asterix.om.constants.AsterixConstantValue in project asterixdb by apache.

the class AccessMethodUtils method addStringArg.

private static void addStringArg(String argument, List<Mutable<ILogicalExpression>> funcArgs) {
    Mutable<ILogicalExpression> stringRef = new MutableObject<>(new ConstantExpression(new AsterixConstantValue(new AString(argument))));
    funcArgs.add(stringRef);
}

Example 32 with AsterixConstantValue

use of org.apache.asterix.om.constants.AsterixConstantValue in project asterixdb by apache.

the class InvertedIndexAccessMethod method isContainsFuncSelectOptimizable.

private boolean isContainsFuncSelectOptimizable(Index index, IOptimizableFuncExpr optFuncExpr) {
    AsterixConstantValue strConstVal = (AsterixConstantValue) ((ConstantExpression) optFuncExpr.getConstantExpr(0)).getValue();
    IAObject strObj = strConstVal.getObject();
    ATypeTag typeTag = strObj.getType().getTypeTag();
    if (!isContainsFuncCompatible(typeTag, index.getIndexType())) {
        return false;
    }
    // Check that the constant search string has at least gramLength characters.
    if (strObj.getType().getTypeTag() == ATypeTag.STRING) {
        AString astr = (AString) strObj;
        if (astr.getStringValue().length() >= index.getGramLength()) {
            return true;
        }
    }
    return false;
}

Example 33 with AsterixConstantValue

use of org.apache.asterix.om.constants.AsterixConstantValue in project asterixdb by apache.

the class InvertedIndexAccessMethod method isFullTextContainsFuncSelectOptimizable.

// Checks whether the given index is compatible with full-text search and
// the type of the constant search predicate is STRING, ARRAY, or MULTISET
private boolean isFullTextContainsFuncSelectOptimizable(Index index, IOptimizableFuncExpr optFuncExpr) {
    AsterixConstantValue strConstVal = (AsterixConstantValue) ((ConstantExpression) optFuncExpr.getConstantExpr(0)).getValue();
    IAObject strObj = strConstVal.getObject();
    ATypeTag typeTag = strObj.getType().getTypeTag();
    return isFullTextContainsFuncCompatible(typeTag, index.getIndexType());
}

Example 34 with AsterixConstantValue

use of org.apache.asterix.om.constants.AsterixConstantValue in project asterixdb by apache.

the class InlineAllNtsInSubplanVisitor method createFieldAccessAssignOperator.

private ILogicalOperator createFieldAccessAssignOperator(LogicalVariable recordVar, Set<LogicalVariable> inputLiveVars) {
    List<LogicalVariable> fieldAccessVars = new ArrayList<>();
    List<Mutable<ILogicalExpression>> fieldAccessExprs = new ArrayList<>();
    // Adds field access by name.
    for (LogicalVariable inputLiveVar : inputLiveVars) {
        if (!correlatedKeyVars.contains(inputLiveVar)) {
            // field Var
            LogicalVariable newVar = context.newVar();
            fieldAccessVars.add(newVar);
            // fieldAcess expr
            List<Mutable<ILogicalExpression>> argRefs = new ArrayList<>();
            argRefs.add(new MutableObject<ILogicalExpression>(new VariableReferenceExpression(recordVar)));
            argRefs.add(new MutableObject<ILogicalExpression>(new ConstantExpression(new AsterixConstantValue(new AString(Integer.toString(inputLiveVar.getId()))))));
            fieldAccessExprs.add(new MutableObject<ILogicalExpression>(new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.FIELD_ACCESS_BY_NAME), argRefs)));
            // Updates variable mapping for ancestor operators.
            updateInputToOutputVarMapping(inputLiveVar, newVar, false);
        }
    }
    AssignOperator fieldAccessAssignOp = new AssignOperator(fieldAccessVars, fieldAccessExprs);
    return fieldAccessAssignOp;
}

Example 35 with AsterixConstantValue

use of org.apache.asterix.om.constants.AsterixConstantValue in project asterixdb by apache.

the class LangExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(CallExpr fcall, Mutable<ILogicalOperator> tupSource) throws CompilationException {
    LogicalVariable v = context.newVar();
    FunctionSignature signature = fcall.getFunctionSignature();
    List<Mutable<ILogicalExpression>> args = new ArrayList<>();
    Mutable<ILogicalOperator> topOp = tupSource;
    for (Expression expr : fcall.getExprList()) {
        switch(expr.getKind()) {
            case VARIABLE_EXPRESSION:
                LogicalVariable var = context.getVar(((VariableExpr) expr).getVar().getId());
                args.add(new MutableObject<>(new VariableReferenceExpression(var)));
                break;
            case LITERAL_EXPRESSION:
                LiteralExpr val = (LiteralExpr) expr;
                args.add(new MutableObject<>(new ConstantExpression(new AsterixConstantValue(ConstantHelper.objectFromLiteral(val.getValue())))));
                break;
            default:
                Pair<ILogicalExpression, Mutable<ILogicalOperator>> eo = langExprToAlgExpression(expr, topOp);
                AbstractLogicalOperator o1 = (AbstractLogicalOperator) eo.second.getValue();
                args.add(new MutableObject<>(eo.first));
                if (o1 != null && !(o1.getOperatorTag() == LogicalOperatorTag.ASSIGN && hasOnlyChild(o1, topOp))) {
                    topOp = eo.second;
                }
                break;
        }
    }
    AbstractFunctionCallExpression f;
    if ((f = lookupUserDefinedFunction(signature, args)) == null) {
        f = lookupBuiltinFunction(signature.getName(), signature.getArity(), args);
    }
    if (f == null) {
        throw new CompilationException(" Unknown function " + signature.getName() + "@" + signature.getArity());
    }
    // Put hints into function call expr.
    if (fcall.hasHints()) {
        for (IExpressionAnnotation hint : fcall.getHints()) {
            f.getAnnotations().put(hint, hint);
        }
    }
    AssignOperator op = new AssignOperator(v, new MutableObject<>(f));
    if (topOp != null) {
        op.getInputs().add(topOp);
    }
    return new Pair<>(op, v);
}