Package com.google.appengine.api.datastore

Examples of com.google.appengine.api.datastore.FetchOptions.limit()

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      }
    }else {
      // paginating so use the pagesize and don't passivate pageOption
      // local limit is not taken into account
      gaeCtx.realPageSize = pag.pageSize;
      fetchOptions.limit(gaeCtx.realPageSize);
    }

    QueryOptionOffset off = (QueryOptionOffset)query.option(QueryOptionOffset.ID);
    // if local offset has been set, uses it
    if(offset!=0){
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      // no pagination but pageOption active
      if(pag.isActive()){
        // if local limit is set, it overrides the pageOption.pageSize
        if(limit!=Integer.MAX_VALUE){
          gaeCtx.realPageSize = limit;
          fetchOptions.limit(gaeCtx.realPageSize);
          // pageOption is passivated to be sure it is not reused
          pag.passivate();
        }
        // using pageOption.pageSize
        else {
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          pag.passivate();
        }
        // using pageOption.pageSize
        else {
          gaeCtx.realPageSize = pag.pageSize;
          fetchOptions.limit(gaeCtx.realPageSize);
          // passivates the pageOption in stateless mode not to keep anything between 2 requests
          if(state.isStateless()){
            pag.passivate();
          }           
        }
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        }
      }
      else {
        if(limit != Integer.MAX_VALUE){
          gaeCtx.realPageSize = limit;
          fetchOptions.limit(gaeCtx.realPageSize);
        }
      }
    }else {
      // paginating so use the pagesize and don't passivate pageOption
      // local limit is not taken into account
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      }
    }else {
      // paginating so use the pagesize and don't passivate pageOption
      // local limit is not taken into account
      gaeCtx.realPageSize = pag.pageSize;
      fetchOptions.limit(gaeCtx.realPageSize);
    }

    QueryOptionOffset off = (QueryOptionOffset)query.option(QueryOptionOffset.ID);
    // if local offset has been set, uses it
    if(offset!=0){
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      // no pagination but pageOption active
      if(pag.isActive()){
        // if local limit is set, it overrides the pageOption.pageSize
        if(limit!=Integer.MAX_VALUE){
          gaeCtx.realPageSize = limit;
          fetchOptions.limit(gaeCtx.realPageSize);
          // pageOption is passivated to be sure it is not reused
          pag.passivate();
        }
        // using pageOption.pageSize
        else {
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    public static void delete(String kind,Transaction trans)throws JGException
  {
     DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
    FetchOptions fo = FetchOptions.Builder.withLimit(dLimit);
    fo.limit(dLimit);
    while (true){
   
     Query q = new Query(kind);
                ArrayList<Key> keys = new ArrayList<Key>();
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        : new FilterPredicate(ROOT_JOB_DISPLAY_NAME, EQUAL, classFilter);
    query.setFilter(filter);
    final PreparedQuery preparedQuery = dataStore.prepare(query);
    final FetchOptions fetchOptions = FetchOptions.Builder.withDefaults();
    if (limit > 0) {
      fetchOptions.limit(limit + 1);
    }
    if (cursor != null) {
      fetchOptions.startCursor(Cursor.fromWebSafeString(cursor));
    }
    return tryFiveTimes(
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        // index of the last result minus the offset.  For example, if
        // fromInclNo is 10 and toExclNo is 25, the limit for the query
        // is 15 because we want 15 results starting after the first 10.

        // We know that offset won't be null because opts is not null.
        opts.limit(intExclNo - offset);
      }
    }

    // users can provide the cursor as a Cursor or its String representation.
    // If we have a cursor, add it to the fetch options
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    if (endCursor != null) {
      clonedOptions.endCursor(endCursor);
    }
    Integer limit = fetchOptions.getLimit();
    if (limit != null) {
      clonedOptions.limit(limit);
    }
    Integer offset = fetchOptions.getOffset();
    if (offset != null) {
      clonedOptions.offset(offset);
    }
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