Result size

Hi all,
I would want to find the best way (in terms of performance)
of fetching a huge number (approx. 100, 000, eack record
abt 1k) records from my Oracle 8i database. Am using JDK 1.2.2
at the moment. Also, I would not want it to be a memory intensive operation.
One way would be to set a limit size on my SQL query, but that
would mean the PreparedStatement has to be executed several times!
But, having no limit on the SQL query would mean a relatively large
amount of memory used for the ResultSet.
What would be the best trade-off? Yup, and am writing the results
to a file.
Any suggested solutions here?
Thank you for time. Appreciate all replies.
- SweetLeaf; banned in S'pore :(

Hi all,
I would want to find the best way (in terms of
performance)
of fetching a huge number (approx. 100, 000, eack
record
abt 1k) records from my Oracle 8i database. Am using
JDK 1.2.2
at the moment. Also, I would not want it to be a
memory intensive operation. The best way is don't do it.
>
One way would be to set a limit size on my SQL query,
but that
would mean the PreparedStatement has to be executed
several times!
But, having no limit on the SQL query would mean a
relatively large
amount of memory used for the ResultSet.
What would be the best trade-off? Yup, and am writing
the results
to a file.
Any suggested solutions here?Writing to a file - so why don't you just use the tools that come with oracle?
Thank you for time. Appreciate all replies.

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Raakh wrote:
Still waiting .....I would have answered much earlier, but when I saw this little bit of impatience, I decided to delay answering for a while.
ArrayList<String> list = new ArrayList<String>();
list.add("abc");
list.add("def");
list.add("ghi");
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abc
System.out.println(list.get(1));
def
System.out.printnln(list);
[abc, def, ghi]That list has 3 items. Each one is a String.
But here is what you appear to be doing:
select * from person
+-----+-------------+-------------+--------+
| id | first name | last name | height |
+-----+-------------+-------------+--------+
|   1 | Joe         | Smith       | 180    |
+-----+-------------+-------------+--------+
|   2 | Mary        | Jones       | 144    |
+-----+-------------+-------------+--------+
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for each column in ResultSet {
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list.add(1);
list.add("Joe");
list.add("Smith");
list.add(180);
list.add(2);
list.add("Mary");
list.add("Jones");
list.add(144);
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1
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Hi-
My application requirement is client side require only limited number of data for 'Search Key' form total records found in cluster. Also i need 'total number of result count' for that key present on the custer.
To get subset of record i'm using IndexAwarefilter and returning only limited set each individual node. though i get total number of records present on the individual node, it is not possible to return this count to client form IndexAwarefilter (filter return only Binary set).
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user11100190 wrote:
Hi,
Thanks for suggesting a soultion, it works well.
But apart from the count (cardinality), the client also expects the actual results. In this case, it seems that the filter will be executed twice (once for counting, then once again for generating actual resultset)
Actually, we need to perform the paging. In order to achieve paging in efficient manner we need that filter returns only the PAGESIZE records and it also returns the total 'count' that meets the criteria.
If you want to do paging, you can use the LimitFilter class.
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We assume that the aggregator will execute immediately after the filter on the same node, this way aggregator will always read the count set by the filter.
You can't assume this if you have multiple client threads doing the same kind of filtering operation and you have a thread-pool configured for the cache service.
Please tell us if our approach will always work, and whether it will be efficient as compared to using Count class which requires executing filter twice.
No it won't if you used a thread-pool. Also, it might happen that Coherence will execute the filtering and the aggregation from the same client thread multiple times on the same node if some partitions were newly moved to the node which already executed the filtering+aggregation once. I don't know anything which would even prevent this being executed on a separate thread concurrently.
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2. Enqueue the total number count you want to pass to the aggregator into that queue.
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Best regards,
Robert

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client_result_cache_lag big integer 3000
client_result_cache_size big integer 0
result_cache_max_result integer 5
result_cache_max_size big integer 0
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client_result_cache_lag big integer 3000
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result_cache_max_size big integer 0
result_cache_mode string MANUAL
result_cache_remote_expiration integer 0
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R e s u l t C a c h e M e m o r y R e p o r t
[Parameters]
Block Size = 1K bytes
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Maximum Result Size = 0 bytes (0 blocks)
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Hi Harvy,
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    public String getRecordId() {
        return recordId;
     * @param recordId
     *            the recordId to set
    public void setRecordId(final String recordId) {
        this.recordId = recordId;
}*3) Use Case*
We are fetching TestDTO records from cache based on LessFilter. However, results returned from cache differs if query is made over property "getModificationTime" of type java.util.Date or over property "getTimeinMillis" of type Long(milliseconds corresponding to date). TestService.java is used for the same.
import java.io.IOException;
import java.util.Collection;
import java.util.Date;
import java.util.Map;
import java.util.Set;
import org.apache.log4j.Logger;
import com.ladbrokes.dtos.cache.TestDTO;
import com.ladbrokes.dtos.cache.TestIdentifier;
import com.cache.services.CacheService;
import com.tangosol.net.CacheFactory;
import com.tangosol.net.NamedCache;
import com.tangosol.util.Filter;
import com.tangosol.util.ValueExtractor;
import com.tangosol.util.extractor.ReflectionExtractor;
import com.tangosol.util.filter.LessFilter;
* @author nkhatw
public class TestService implements CacheService<TestIdentifier, TestDTO, Object> {
    private static final String TEST_CACHE = "testcache";
    private static final NamedCache CACHE = CacheFactory.getCache(TEST_CACHE);
    private static final Logger LOGGER = Logger.getLogger(TestService.class);
     * Push DTO objects with a) modTime of java.util.Date type b) timeInMillis of Long type
     * @throws IOException
    public void init() throws IOException {
        for (int i = 0; i < 30; i++) {
            final TestDTO dto = new TestDTO();
            final Date modTime = new Date();
            dto.setModificationTime(modTime);
            final Long timeInMillis = Long.valueOf(System.currentTimeMillis());
            dto.setTimeinMillis(timeInMillis);
            final TestIdentifier testId = new TestIdentifier();
            testId.setRecordId(String.valueOf(i));
            dto.setId(testId);
            final CacheService testService = new TestService();
            testService.createOrUpdate(dto, null);
            LOGGER.debug("Pushed record in cache with key: " + i + " modTime: " + modTime + " Time in millis: "
                + timeInMillis);
     * 1) Fetch Data from cache based on LessFilter with args:
     * a) ValueExtractor: extracting time property
     * b) java.util.Date value to be compared with
     * 2) Verify extracted entryset
     * @throws IOException
    public void testbyDate(final Date startDate) throws IOException {
        final ValueExtractor extractor = new ReflectionExtractor("getModificationTime");
        LOGGER.debug("Fetching records from cache with modTime less than: " + startDate);
        final Filter lessFilter = new LessFilter(extractor, startDate);
        final Set results = CACHE.entrySet(lessFilter);
        LOGGER.debug("Fetched Records:" + results.size());
        assert results.isEmpty();
     * 1) Fetch Data from cache based on LessFilter with args:
     * a) ValueExtractor: extracting "time in millis property"
     * b) java.Long value to be compared with
     * 2) Verify extracted entryset
    public void testbyTime(final Long time) throws IOException {
        final ValueExtractor extractor = new ReflectionExtractor("getTimeinMillis");
        LOGGER.debug("Fetching records from cache with timeinMillis less than: " + time);
        final Filter lessFilter = new LessFilter(extractor, time);
        final Set results = CACHE.entrySet(lessFilter);
        LOGGER.debug("Fetched Records:" + results.size());
        assert results.isEmpty();
    @Override
    public void createOrUpdate(final TestDTO testDTO, final Object arg1) throws IOException {
        CACHE.put(testDTO.getId(), testDTO);
    @Override
    public void createOrUpdate(final Collection<TestDTO> arg0, final Object arg1) throws IOException {
        // YTODO Auto-generated method stub
    @Override
    public <G>G read(final TestIdentifier arg0) throws IOException {
        // YTODO Auto-generated method stub
        return null;
    @Override
    public Collection<?> read(final Map<TestIdentifier, Object> arg0) throws IOException {
        // YTODO Auto-generated method stub
        return null;
    @Override
    public void remove(final TestDTO arg0) throws IOException {
        // YTODO Auto-generated method stub
Use Case execution Results:
"testbyTime" method returns correct results.
However, "testbyDate" method gives random and incorrect results.

Problem in user-specific search results

Hi All,
I have created an index which is indexing the docs properly. Now, I written a code to show user-specific docs using index management API's..
I have used an EP5 current user.
ISearchResultList results = session.getSearchResults(1,session.getNumberResultKeys());
In the following stmt, I am getting the proper value for session.getNumberResultKeys(), but still ISearchResultList size always is zero.
Is there anything I am missin in code or its a configuration problem??
I have full control permissions to index as well as to repository folder..Can someone plz get me out of this problem..Its urgent
Thanks & Regards,
Udit

Hi Udit,
I got the solution for the problem. Here is the code I am using and its working great. Just give a try
com.sapportals.portal.security.usermanagement.IUser user = null;
user = (com.sapportals.portal.security.usermanagement.IUser)request.getUser().getUser();
response.write("<html><head><title>Search</title></head><body>");
ResourceContext c = new ResourceContext(user);
try {
IIndexService indexService =
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     .getInstance()
     .getServiceFactory()
     .getService(IServiceTypesConst.INDEX_SERVICE);
     SearchQueryListBuilder sqb = new SearchQueryListBuilder();
     sqb.setSearchTerm("valero");
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     // get an instance of federated search
IFederatedSearch federatedSearch =
          (IFederatedSearch) indexService.getObjectInstance(
          IWcmIndexConst.FEDERATED_SEARCH_INSTANCE);
     List indexList = new ArrayList();
     String index = null;
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     indexList.add(indexService.getIndex(index));
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     // it is recommended to use a search session object
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     if (session == null)
     session = federatedSearch.searchWithSession(qel, indexList, c);
     this.renderResultHeader(response, session, indexList);
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     ISearchResultList results =     session.getSearchResults(1, session.getTotalNumberResultKeys());
     response.write(" from session => " + results.size() + " and size is : " + results.toString());
Here it will print the size of the ISearchResultList, the problem is the user we are passing to ResourceContext is not proper.

Adjusting size of photo prior to emailing it

Whenever I send an email with a photo attached (from iPhoto) it is huge. I've checked Help and can't find anthing referring to how to resize a photo prior to attaching to an email. CH

To send pic via Comcast email:
Per RatVega: use Preview to change size of photo
Preview > Tools > Adjust size
Change size by changing height & width > check Resulting Size box
at bottom of box. Adjust numbers to make file the size you want.
Save As...Name & put file where it's easy to find, such as on Desktop
Go to Comcast mail
Click New > Set up new email.
Click Attach at top of email window > Attach File window opens
Click on Choose File > Finder window opens
Click on the pic file you set up in Preview > Click Choose button
This takes you back to the Comcast Attach File window.
Check that your files there, to the right of the Choose File button
Click Attach at bottom of window
Wait a couple seconds > email will open with file attached.
This isn't quite as tedious as it looks. It does get the pic sized & in Comcast.
Good luck.

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