Examples with QBSubQuery org.apache.hadoop.hive.ql.parse.QBSubQuery used on opensource projects

Example 1 with QBSubQuery

use of org.apache.hadoop.hive.ql.parse.QBSubQuery in project hive by apache.

the class ExplainSQRewriteTask method addRewrites.

void addRewrites(TokenRewriteStream stream, QB qb, String program, PrintStream out) {
    QBSubQuery sqW = qb.getWhereClauseSubQueryPredicate();
    QBSubQuery sqH = qb.getHavingClauseSubQueryPredicate();
    if (sqW != null || sqH != null) {
        ASTNode sqNode = sqW != null ? sqW.getOriginalSubQueryASTForRewrite() : sqH.getOriginalSubQueryASTForRewrite();
        ASTNode tokQry = getQueryASTNode(sqNode);
        ASTNode tokFrom = (ASTNode) tokQry.getChild(0);
        StringBuilder addedJoins = new StringBuilder();
        if (sqW != null) {
            addRewrites(stream, sqW, program, out, qb.getId(), true, addedJoins);
        }
        if (sqH != null) {
            addRewrites(stream, sqH, program, out, qb.getId(), false, addedJoins);
        }
        stream.insertAfter(program, tokFrom.getTokenStopIndex(), addedJoins);
    }
    Set<String> sqAliases = qb.getSubqAliases();
    for (String sqAlias : sqAliases) {
        addRewrites(stream, qb.getSubqForAlias(sqAlias).getQB(), program, out);
    }
}