Examples of SPSDescriptor

org.apache.derby.iapi.sql.dictionary.SPSDescriptor
A SPSDescriptor describes a Stored Prepared Statement. It correlates to a row in SYS.SYSSTATEMENTS. SYNCHRONIZATION: Stored prepared statements may be cached. Thus they may be shared by multiple threads. It is very hard for two threads to try to muck with an sps simultaeously because all ddl (including sps recompilation) clears out the sps cache and invalidates whatever statement held a cached sps. But it is possible for two statements to do a prepare execute statment at the exact same time, so both try to do an sps.prepare() at the same time during code generation, so we synchronize most everything except getters on immutable objects just to be on the safe side.

Examples of org.apache.derby.iapi.sql.dictionary.SPSDescriptor

     * entry.  Don't want to block.
     */
    lcc.beginNestedTransaction(true);


    DataDictionary dd = getLanguageConnectionContext().getDataDictionary();
    SPSDescriptor spsd = dd.getSPSDescriptor(
                    spsName, 
                    net ? dd.getSysIBMSchemaDescriptor() :
                    dd.getSystemSchemaDescriptor());
    lcc.commitNestedTransaction();

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Examples of org.apache.derby.iapi.sql.dictionary.SPSDescriptor

   * @exception StandardException    Thrown on failure
   */
  public SPSDescriptor getSPSDescriptor(UUID uuid)
        throws StandardException
  {
    SPSDescriptor     sps;


    /* Make sure that non-core info is initialized */
    getNonCoreTI(SYSSTATEMENTS_CATALOG_NUM);


    /* Only use the cache if we're in compile-only mode */
    if ((spsNameCache != null) && 
      (getCacheMode() == DataDictionary.COMPILE_ONLY_MODE))
    {
      sps = (SPSDescriptor)spsIdHash.get(uuid);
      if (sps != null)
      {
        //System.out.println("found in hash table ");
        // System.out.println("stmt text " + sps.getText());


        return sps;
      }
  
      sps = getSPSDescriptorIndex2Scan(uuid.toString());
      TableKey stmtKey = new TableKey(sps.getSchemaDescriptor().getUUID(), sps.getName());
      try
      {
        SPSNameCacheable   cacheEntry = (SPSNameCacheable)spsNameCache.create(stmtKey, sps);
        spsNameCache.release(cacheEntry);
      } catch (StandardException se)

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Examples of org.apache.derby.iapi.sql.dictionary.SPSDescriptor


    /* Set up the start/stop position for the scan */
    ExecIndexRow keyRow = exFactory.getIndexableRow(1);
    keyRow.setColumn(1, stmtIDOrderable);


    SPSDescriptor spsd = (SPSDescriptor)
          getDescriptorViaIndex(
            SYSSTATEMENTSRowFactory.SYSSTATEMENTS_INDEX1_ID,
            keyRow,
            (ScanQualifier [][]) null,
            ti,

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Examples of org.apache.derby.iapi.sql.dictionary.SPSDescriptor

   * @exception StandardException    Thrown on failure
   */
  public SPSDescriptor getSPSDescriptor(String stmtName, SchemaDescriptor sd)
    throws StandardException
  {
    SPSDescriptor    sps = null;
    TableKey      stmtKey;
    UUID        schemaUUID;


    /*
    ** If we didn't get a schema descriptor, we had better

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Examples of org.apache.derby.iapi.sql.dictionary.SPSDescriptor

    /* Set up the start/stop position for the scan */
    ExecIndexRow keyRow = exFactory.getIndexableRow(2);
    keyRow.setColumn(1, stmtNameOrderable);
    keyRow.setColumn(2, schemaIDOrderable);


    SPSDescriptor spsd = (SPSDescriptor)
          getDescriptorViaIndex(
            SYSSTATEMENTSRowFactory.SYSSTATEMENTS_INDEX2_ID,
            keyRow,
            (ScanQualifier [][]) null,
            ti,
            (TupleDescriptor) null,
            (List) null,
            false);
  
    /*
    ** Set up the parameter defaults.  We are only
    ** doing this when we look up by name because
    ** this is the only time we cache, and it can
    ** be foolish to look up the parameter defaults
    ** for someone that doesn't need them.
    */
    if (spsd != null)
    {
      Vector v = new Vector();
      spsd.setParams(getSPSParams(spsd, v));
      Object[] defaults = new Object[v.size()];
      v.copyInto(defaults);
      spsd.setParameterDefaults(defaults);
    }


    return spsd;
  }

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Examples of org.apache.derby.iapi.sql.dictionary.SPSDescriptor

      ContextService.getContext(LanguageConnectionContext.CONTEXT_ID);
    startWriting(lcc);


    for (java.util.Iterator li = getAllSPSDescriptors().iterator(); li.hasNext(); )
    { 
      SPSDescriptor spsd = (SPSDescriptor) li.next();
      spsd.makeInvalid(DependencyManager.USER_RECOMPILE_REQUEST, lcc);
    } 
  }

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Examples of org.apache.derby.iapi.sql.dictionary.SPSDescriptor

    
    while (e.hasMoreElements())
    {
      String spsName = (String)e.nextElement();
      String spsText =  p.getProperty(spsName);
      SPSDescriptor spsd = new SPSDescriptor(this, spsName,
                           getUUIDFactory().createUUID(),
                           schemaID,
                           schemaID,
                           SPSDescriptor.SPS_TYPE_REGULAR,
                           !nocompile,    // it is valid, unless nocompile

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Examples of org.apache.derby.iapi.sql.dictionary.SPSDescriptor

     * entry.  Don't want to block.
     */
    lcc.beginNestedTransaction(true);


    DataDictionary dd = getLanguageConnectionContext().getDataDictionary();
    SPSDescriptor spsd = dd.getSPSDescriptor(
                    spsName, 
                    net ? dd.getSysIBMSchemaDescriptor() :
                    dd.getSystemSchemaDescriptor());
    lcc.commitNestedTransaction();

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Examples of org.apache.derby.iapi.sql.dictionary.SPSDescriptor

   * @exception StandardException    Thrown on failure
   */
  public SPSDescriptor getSPSDescriptor(UUID uuid)
        throws StandardException
  {
    SPSDescriptor     sps;


    /* Make sure that non-core info is initialized */
    getNonCoreTI(SYSSTATEMENTS_CATALOG_NUM);


    /* Only use the cache if we're in compile-only mode */
    if ((spsNameCache != null) && 
      (getCacheMode() == DataDictionary.COMPILE_ONLY_MODE))
    {
      sps = (SPSDescriptor)spsIdHash.get(uuid);
      if (sps != null)
      {
        //System.out.println("found in hash table ");
        // System.out.println("stmt text " + sps.getText());


        return sps;
      }
  
      sps = getSPSDescriptorIndex2Scan(uuid.toString());
      TableKey stmtKey = new TableKey(sps.getSchemaDescriptor().getUUID(), sps.getName());
      try
      {
        SPSNameCacheable   cacheEntry = (SPSNameCacheable)spsNameCache.create(stmtKey, sps);
        spsNameCache.release(cacheEntry);
      } catch (StandardException se)

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Examples of org.apache.derby.iapi.sql.dictionary.SPSDescriptor


    /* Set up the start/stop position for the scan */
    ExecIndexRow keyRow = exFactory.getIndexableRow(1);
    keyRow.setColumn(1, stmtIDOrderable);


    SPSDescriptor spsd = (SPSDescriptor)
          getDescriptorViaIndex(
            SYSSTATEMENTSRowFactory.SYSSTATEMENTS_INDEX1_ID,
            keyRow,
            (ScanQualifier [][]) null,
            ti,

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