Examples with ILangExpression org.apache.asterix.lang.common.base.ILangExpression used on opensource projects

Example 11 with ILangExpression

use of org.apache.asterix.lang.common.base.ILangExpression in project asterixdb by apache.

the class AQLCloneAndSubstituteVariablesVisitor method visit.

@Override
public Pair<ILangExpression, VariableSubstitutionEnvironment> visit(DistinctClause dc, VariableSubstitutionEnvironment env) throws CompilationException {
    List<Expression> exprList = VariableCloneAndSubstitutionUtil.visitAndCloneExprList(dc.getDistinctByExpr(), env, this);
    DistinctClause dc2 = new DistinctClause(exprList);
    return new Pair<ILangExpression, VariableSubstitutionEnvironment>(dc2, env);
}

Example 12 with ILangExpression

use of org.apache.asterix.lang.common.base.ILangExpression in project asterixdb by apache.

the class CloneAndSubstituteVariablesVisitor method visit.

@Override
public Pair<ILangExpression, VariableSubstitutionEnvironment> visit(RecordConstructor rc, VariableSubstitutionEnvironment env) throws CompilationException {
    List<FieldBinding> oldFbs = rc.getFbList();
    ArrayList<FieldBinding> newFbs = new ArrayList<>(oldFbs.size());
    for (FieldBinding fb : oldFbs) {
        Pair<ILangExpression, VariableSubstitutionEnvironment> p1 = fb.getLeftExpr().accept(this, env);
        Pair<ILangExpression, VariableSubstitutionEnvironment> p2 = fb.getRightExpr().accept(this, env);
        FieldBinding fb2 = new FieldBinding((Expression) p1.first, (Expression) p2.first);
        newFbs.add(fb2);
    }
    RecordConstructor newRc = new RecordConstructor(newFbs);
    return new Pair<>(newRc, env);
}

Example 13 with ILangExpression

use of org.apache.asterix.lang.common.base.ILangExpression in project asterixdb by apache.

the class CloneAndSubstituteVariablesVisitor method visit.

@Override
public Pair<ILangExpression, VariableSubstitutionEnvironment> visit(CallExpr pf, VariableSubstitutionEnvironment env) throws CompilationException {
    List<Expression> exprList = VariableCloneAndSubstitutionUtil.visitAndCloneExprList(pf.getExprList(), env, this);
    CallExpr f = new CallExpr(pf.getFunctionSignature(), exprList);
    return new Pair<>(f, env);
}

Example 14 with ILangExpression

use of org.apache.asterix.lang.common.base.ILangExpression in project asterixdb by apache.

the class CloneAndSubstituteVariablesVisitor method visit.

@Override
public Pair<ILangExpression, VariableSubstitutionEnvironment> visit(WhereClause wc, VariableSubstitutionEnvironment env) throws CompilationException {
    Pair<ILangExpression, VariableSubstitutionEnvironment> p1 = wc.getWhereExpr().accept(this, env);
    WhereClause newW = new WhereClause((Expression) p1.first);
    return new Pair<>(newW, p1.second);
}

Example 15 with ILangExpression

use of org.apache.asterix.lang.common.base.ILangExpression in project asterixdb by apache.

the class CloneAndSubstituteVariablesVisitor method visit.

@Override
public Pair<ILangExpression, VariableSubstitutionEnvironment> visit(FunctionDecl fd, VariableSubstitutionEnvironment env) throws CompilationException {
    List<VarIdentifier> newList = new ArrayList<>(fd.getParamList().size());
    for (VarIdentifier vi : fd.getParamList()) {
        VariableExpr varExpr = new VariableExpr(vi);
        if (!env.constainsOldVar(varExpr)) {
            throw new CompilationException("Parameter " + vi + " does not appear in the substitution list.");
        }
        Expression newExpr = env.findSubstitution(varExpr);
        if (newExpr.getKind() != Kind.VARIABLE_EXPRESSION) {
            throw new CompilationException("Parameter " + vi + " cannot be substituted by a non-variable expression.");
        }
        newList.add(((VariableExpr) newExpr).getVar());
    }
    Pair<ILangExpression, VariableSubstitutionEnvironment> p1 = fd.getFuncBody().accept(this, env);
    FunctionDecl newF = new FunctionDecl(fd.getSignature(), newList, (Expression) p1.first);
    return new Pair<>(newF, env);
}