Examples with LetClause org.apache.asterix.lang.common.clause.LetClause used on opensource projects

Example 21 with LetClause

use of org.apache.asterix.lang.common.clause.LetClause in project asterixdb by apache.

the class DeepCopyVisitor method visit.

@Override
public SelectBlock visit(SelectBlock selectBlock, Void arg) throws CompilationException {
    FromClause fromClause = null;
    List<LetClause> letClauses = new ArrayList<>();
    WhereClause whereClause = null;
    GroupbyClause gbyClause = null;
    List<LetClause> gbyLetClauses = new ArrayList<>();
    HavingClause havingClause = null;
    SelectClause selectCluase;
    // "group by", "let"s, "having" and "select".
    if (selectBlock.hasFromClause()) {
        fromClause = (FromClause) selectBlock.getFromClause().accept(this, arg);
    }
    if (selectBlock.hasLetClauses()) {
        List<LetClause> letList = selectBlock.getLetList();
        for (LetClause letClause : letList) {
            letClauses.add((LetClause) letClause.accept(this, arg));
        }
    }
    if (selectBlock.hasWhereClause()) {
        whereClause = (WhereClause) selectBlock.getWhereClause().accept(this, arg);
    }
    if (selectBlock.hasGroupbyClause()) {
        gbyClause = (GroupbyClause) selectBlock.getGroupbyClause().accept(this, arg);
    }
    if (selectBlock.hasLetClausesAfterGroupby()) {
        List<LetClause> letListAfterGby = selectBlock.getLetListAfterGroupby();
        for (LetClause letClauseAfterGby : letListAfterGby) {
            gbyLetClauses.add((LetClause) letClauseAfterGby.accept(this, arg));
        }
    }
    if (selectBlock.hasHavingClause()) {
        havingClause = (HavingClause) selectBlock.getHavingClause().accept(this, arg);
    }
    selectCluase = (SelectClause) selectBlock.getSelectClause().accept(this, arg);
    return new SelectBlock(selectCluase, fromClause, letClauses, whereClause, gbyClause, gbyLetClauses, havingClause);
}

Example 22 with LetClause

use of org.apache.asterix.lang.common.clause.LetClause in project asterixdb by apache.

the class DeepCopyVisitor method visit.

@Override
public SelectExpression visit(SelectExpression selectExpression, Void arg) throws CompilationException {
    List<LetClause> lets = new ArrayList<>();
    SelectSetOperation select;
    OrderbyClause orderby = null;
    LimitClause limit = null;
    // visit let list
    if (selectExpression.hasLetClauses()) {
        for (LetClause letClause : selectExpression.getLetList()) {
            lets.add((LetClause) letClause.accept(this, arg));
        }
    }
    // visit the main select.
    select = (SelectSetOperation) selectExpression.getSelectSetOperation().accept(this, arg);
    // visit order by
    if (selectExpression.hasOrderby()) {
        List<Expression> orderExprs = new ArrayList<>();
        for (Expression orderExpr : selectExpression.getOrderbyClause().getOrderbyList()) {
            orderExprs.add((Expression) orderExpr.accept(this, arg));
        }
        orderby = new OrderbyClause(orderExprs, selectExpression.getOrderbyClause().getModifierList());
    }
    // visit limit
    if (selectExpression.hasLimit()) {
        limit = (LimitClause) selectExpression.getLimitClause().accept(this, arg);
    }
    return new SelectExpression(lets, select, orderby, limit, selectExpression.isSubquery());
}

Example 23 with LetClause

use of org.apache.asterix.lang.common.clause.LetClause in project asterixdb by apache.

the class SqlppInlineUdfsVisitor method visit.

@Override
public Boolean visit(SelectExpression selectExpression, List<FunctionDecl> funcs) throws CompilationException {
    boolean changed = false;
    if (selectExpression.hasLetClauses()) {
        for (LetClause letClause : selectExpression.getLetList()) {
            changed |= letClause.accept(this, funcs);
        }
    }
    changed |= selectExpression.getSelectSetOperation().accept(this, funcs);
    if (selectExpression.hasOrderby()) {
        changed |= selectExpression.getOrderbyClause().accept(this, funcs);
    }
    if (selectExpression.hasLimit()) {
        changed |= selectExpression.getLimitClause().accept(this, funcs);
    }
    return changed;
}