Examples with StringLiteral org.apache.asterix.lang.common.literal.StringLiteral used on opensource projects

Example 6 with StringLiteral

use of org.apache.asterix.lang.common.literal.StringLiteral in project asterixdb by apache.

the class AqlDeleteRewriteVisitor method visit.

@Override
public Void visit(DeleteStatement deleteStmt, Void visitArg) {
    List<Expression> arguments = new ArrayList<>();
    Identifier dataverseName = deleteStmt.getDataverseName();
    Identifier datasetName = deleteStmt.getDatasetName();
    String arg = dataverseName == null ? datasetName.getValue() : dataverseName.getValue() + "." + datasetName.getValue();
    LiteralExpr argumentLiteral = new LiteralExpr(new StringLiteral(arg));
    arguments.add(argumentLiteral);
    CallExpr callExpression = new CallExpr(new FunctionSignature(FunctionConstants.ASTERIX_NS, "dataset", 1), arguments);
    List<Clause> clauseList = new ArrayList<>();
    VariableExpr var = deleteStmt.getVariableExpr();
    Clause forClause = new ForClause(var, callExpression);
    clauseList.add(forClause);
    Clause whereClause = null;
    Expression condition = deleteStmt.getCondition();
    if (condition != null) {
        whereClause = new WhereClause(condition);
        clauseList.add(whereClause);
    }
    VariableExpr returnExpr = new VariableExpr(var.getVar());
    returnExpr.setIsNewVar(false);
    FLWOGRExpression flowgr = new FLWOGRExpression(clauseList, returnExpr);
    Query query = new Query(false);
    query.setBody(flowgr);
    deleteStmt.setQuery(query);
    return null;
}

Example 7 with StringLiteral

use of org.apache.asterix.lang.common.literal.StringLiteral in project asterixdb by apache.

the class RangeMapBuilder method parseLiteralToBytes.

@SuppressWarnings("unchecked")
private static void parseLiteralToBytes(Expression item, DataOutput out) throws CompilationException {
    AMutableDouble aDouble = new AMutableDouble(0);
    AMutableFloat aFloat = new AMutableFloat(0);
    AMutableInt64 aInt64 = new AMutableInt64(0);
    AMutableInt32 aInt32 = new AMutableInt32(0);
    AMutableString aString = new AMutableString("");
    @SuppressWarnings("rawtypes") ISerializerDeserializer serde;
    Literal l = ((LiteralExpr) item).getValue();
    try {
        switch(l.getLiteralType()) {
            case DOUBLE:
                DoubleLiteral dl = (DoubleLiteral) l;
                serde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ADOUBLE);
                aDouble.setValue(dl.getValue());
                serde.serialize(aDouble, out);
                break;
            case FLOAT:
                FloatLiteral fl = (FloatLiteral) l;
                serde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AFLOAT);
                aFloat.setValue(fl.getValue());
                serde.serialize(aFloat, out);
                break;
            case INTEGER:
                IntegerLiteral il = (IntegerLiteral) l;
                serde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT32);
                aInt32.setValue(il.getValue());
                serde.serialize(aInt32, out);
                break;
            case LONG:
                LongIntegerLiteral lil = (LongIntegerLiteral) l;
                serde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT64);
                aInt64.setValue(lil.getValue());
                serde.serialize(aInt64, out);
                break;
            case STRING:
                StringLiteral sl = (StringLiteral) l;
                serde = SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ASTRING);
                aString.setValue(sl.getValue());
                serde.serialize(aString, out);
                break;
            default:
                throw new NotImplementedException("The range map builder has not been implemented for " + item.getKind() + " type of expressions.");
        }
    } catch (HyracksDataException e) {
        throw new CompilationException(e.getMessage());
    }
}