Examples with ORecordIteratorClusters com.orientechnologies.orient.core.iterator.ORecordIteratorClusters used on opensource projects

Example 1 with ORecordIteratorClusters

use of com.orientechnologies.orient.core.iterator.ORecordIteratorClusters in project orientdb by orientechnologies.

the class OCommandExecutorSQLResultsetAbstract method searchInClusters.

protected void searchInClusters() {
    final ODatabaseDocumentInternal database = getDatabase();
    final Set<Integer> clusterIds = new HashSet<Integer>();
    for (String clusterName : parsedTarget.getTargetClusters().keySet()) {
        if (clusterName == null || clusterName.length() == 0)
            throw new OCommandExecutionException("No cluster or schema class selected in query");
        database.checkSecurity(ORule.ResourceGeneric.CLUSTER, ORole.PERMISSION_READ, clusterName.toLowerCase());
        if (Character.isDigit(clusterName.charAt(0))) {
            // GET THE CLUSTER NUMBER
            for (int clusterId : OStringSerializerHelper.splitIntArray(clusterName)) {
                if (clusterId == -1)
                    throw new OCommandExecutionException("Cluster '" + clusterName + "' not found");
                clusterIds.add(clusterId);
            }
        } else {
            // GET THE CLUSTER NUMBER BY THE CLASS NAME
            final int clusterId = database.getClusterIdByName(clusterName.toLowerCase());
            if (clusterId == -1)
                throw new OCommandExecutionException("Cluster '" + clusterName + "' not found");
            clusterIds.add(clusterId);
        }
    }
    // CREATE CLUSTER AS ARRAY OF INT
    final int[] clIds = new int[clusterIds.size()];
    int i = 0;
    for (int c : clusterIds) clIds[i++] = c;
    final ORID[] range = getRange();
    target = new ORecordIteratorClusters<ORecord>(database, database, clIds).setRange(range[0], range[1]);
}

Example 2 with ORecordIteratorClusters

use of com.orientechnologies.orient.core.iterator.ORecordIteratorClusters in project orientdb by orientechnologies.

the class OCommandExecutorSQLSelect method fetchFromTarget.

private boolean fetchFromTarget(final Iterator<? extends OIdentifiable> iTarget) {
    fetchLimit = getQueryFetchLimit();
    final long startFetching = System.currentTimeMillis();
    final int[] clusterIds = iTarget instanceof ORecordIteratorClusters ? ((ORecordIteratorClusters) iTarget).getClusterIds() : null;
    parallel = (parallel || OGlobalConfiguration.QUERY_PARALLEL_AUTO.getValueAsBoolean()) && canRunParallel(clusterIds, iTarget);
    try {
        if (parallel)
            return parallelExec(iTarget);
        boolean prefetchRecords = false;
        if (canScanStorageCluster(clusterIds)) {
            prefetchRecords = true;
        }
        final ODatabaseDocumentInternal database = getDatabase();
        database.setPrefetchRecords(prefetchRecords);
        try {
            // WORK WITH ITERATOR
            return serialIterator(iTarget);
        } finally {
            database.setPrefetchRecords(false);
        }
    } finally {
        context.setVariable("fetchingFromTargetElapsed", (System.currentTimeMillis() - startFetching));
    }
}