Examples with CompiledDeleteStatement org.apache.asterix.translator.CompiledStatements.CompiledDeleteStatement used on opensource projects

Example 1 with CompiledDeleteStatement

use of org.apache.asterix.translator.CompiledStatements.CompiledDeleteStatement in project asterixdb by apache.

the class QueryTranslator method handleDeleteStatement.

public JobSpecification handleDeleteStatement(MetadataProvider metadataProvider, Statement stmt, IHyracksClientConnection hcc, boolean compileOnly) throws Exception {
    DeleteStatement stmtDelete = (DeleteStatement) stmt;
    String dataverseName = getActiveDataverse(stmtDelete.getDataverseName());
    MetadataTransactionContext mdTxnCtx = MetadataManager.INSTANCE.beginTransaction();
    boolean bActiveTxn = true;
    metadataProvider.setMetadataTxnContext(mdTxnCtx);
    MetadataLockManager.INSTANCE.insertDeleteUpsertBegin(metadataProvider.getLocks(), dataverseName + "." + stmtDelete.getDatasetName());
    try {
        metadataProvider.setWriteTransaction(true);
        CompiledDeleteStatement clfrqs = new CompiledDeleteStatement(stmtDelete.getVariableExpr(), dataverseName, stmtDelete.getDatasetName().getValue(), stmtDelete.getCondition(), stmtDelete.getVarCounter(), stmtDelete.getQuery());
        JobSpecification jobSpec = rewriteCompileQuery(hcc, metadataProvider, clfrqs.getQuery(), clfrqs);
        MetadataManager.INSTANCE.commitTransaction(mdTxnCtx);
        bActiveTxn = false;
        if (jobSpec != null && !compileOnly) {
            JobUtils.runJob(hcc, jobSpec, true);
        }
        return jobSpec;
    } catch (Exception e) {
        if (bActiveTxn) {
            abort(e, e, mdTxnCtx);
        }
        throw e;
    } finally {
        metadataProvider.getLocks().unlock();
    }
}