Examples with SymbolReference com.facebook.presto.sql.tree.SymbolReference used on opensource projects

Example 11 with SymbolReference

use of com.facebook.presto.sql.tree.SymbolReference in project presto by prestodb.

the class FunctionAssertions method needsBoundValue.

private static boolean needsBoundValue(Expression projectionExpression) {
    final AtomicBoolean hasSymbolReferences = new AtomicBoolean();
    new DefaultTraversalVisitor<Void, Void>() {

        @Override
        protected Void visitSymbolReference(SymbolReference node, Void context) {
            hasSymbolReferences.set(true);
            return null;
        }
    }.process(projectionExpression, null);
    return hasSymbolReferences.get();
}

Example 12 with SymbolReference

use of com.facebook.presto.sql.tree.SymbolReference in project presto by prestodb.

the class ProjectNode method isIdentity.

public boolean isIdentity() {
    for (Map.Entry<Symbol, Expression> entry : assignments.entrySet()) {
        Expression expression = entry.getValue();
        Symbol symbol = entry.getKey();
        if (!(expression instanceof SymbolReference && ((SymbolReference) expression).getName().equals(symbol.getName()))) {
            return false;
        }
    }
    return true;
}

Example 13 with SymbolReference

use of com.facebook.presto.sql.tree.SymbolReference in project presto by prestodb.

the class SimplifyCountOverConstant method isCountOverConstant.

private static boolean isCountOverConstant(AggregationNode.Aggregation aggregation, Assignments inputs) {
    Signature signature = aggregation.getSignature();
    if (!signature.getName().equals("count") || signature.getArgumentTypes().size() != 1) {
        return false;
    }
    Expression argument = aggregation.getCall().getArguments().get(0);
    if (argument instanceof SymbolReference) {
        argument = inputs.get(Symbol.from(argument));
    }
    return argument instanceof Literal && !(argument instanceof NullLiteral);
}