Examples of org.teiid.query.metadata.TempMetadataAdapter

org.teiid.query.metadata.TempMetadataAdapter

This is an adapter class, it contains another instance of QueryMetadataInterface as well as a TempMetadataStore. It defers to either one of these when appropriate.

When a metadataID Object is requested for a group or element name, this will first check the QueryMetadataInterface. If an ID wasn't found there, it will then check the TempMetadataStore.

For methods that take a metadataID arg, this class may check whether it is a TempMetadataID or not and react accordingly.

        Select select = new Select();
        query.setSelect(select);
        From from = new From();
        from.addClause(new UnaryFromClause(inlineGroup)); 
        TempMetadataStore store = new TempMetadataStore();
        TempMetadataAdapter tma = new TempMetadataAdapter(metadata, store);
        if (nested instanceof QueryCommand) {
          Query firstProject = ((QueryCommand)nested).getProjectedQuery(); 
          makeSelectUnique(firstProject.getSelect(), false);
        }
        TempMetadataID gid = store.addTempGroup(inlineGroup.getName(), nested.getProjectedSymbols());

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        throws QueryResolverException, QueryMetadataException, TeiidComponentException {
        LogManager.logTrace(org.teiid.logging.LogConstants.CTX_QUERY_RESOLVER, new Object[]{"Resolving block", block}); //$NON-NLS-1$
        
        //create a new variable and metadata context for this block so that discovered metadata is not visible else where
        TempMetadataStore store = new TempMetadataStore(new HashMap(metadata.getMetadataStore().getData()));
        metadata = new TempMetadataAdapter(metadata.getMetadata(), store);
        externalGroups = new GroupContext(externalGroups, null);
        
        //create a new variables group for this block
        GroupSymbol variables = ProcedureContainerResolver.addScalarGroup(ProcedureReservedWords.VARIABLES, store, externalGroups, new LinkedList<SingleElementSymbol>());

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                resolveEmbeddedCommand(metadata, externalGroups, cmd);
                List<SingleElementSymbol> symbols = cmd.getProjectedSymbols();
                
                //add the loop cursor group into its own context
                TempMetadataStore store = new TempMetadataStore(new HashMap(metadata.getMetadataStore().getData()));
                metadata = new TempMetadataAdapter(metadata.getMetadata(), store);
                externalGroups = new GroupContext(externalGroups, null);
                
                ProcedureContainerResolver.addScalarGroup(groupName, store, externalGroups, symbols, false);
                
                resolveBlock(command, loopStmt.getBlock(), externalGroups, metadata);

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    static ProcessorPlan helpGetPlan(Command command, QueryMetadataInterface metadata, CapabilitiesFinder capFinder, CommandContext context) throws TeiidException {
    if(DEBUG) System.out.println("\n####################################\n" + command); //$NON-NLS-1$
    AnalysisRecord analysisRecord = new AnalysisRecord(false, DEBUG);
    if (!(metadata instanceof TempMetadataAdapter)) {
      metadata = new TempMetadataAdapter(metadata, new TempMetadataStore());
    }
    context.setMetadata(metadata);
        try {
      QueryResolver.resolveCommand(command, metadata);

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    if (obj instanceof Command) {
      Command command = (Command)obj;
      visitor.currentCommand = command;
            Map tempMetadata = command.getTemporaryMetadata();
            if(tempMetadata != null && !tempMetadata.isEmpty()) {
              visitor.setMetadata(new TempMetadataAdapter(metadata, new TempMetadataStore(tempMetadata)));
            }    
    }
  }

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        if(multiSourceModelList != null && multiSourceModelList.size() > 0) {
          this.multiSourceModels = multiSourceModelList;
            this.metadata = new MultiSourceMetadataWrapper(this.metadata, this.multiSourceModels);
        }
        
        TempMetadataAdapter tma = new TempMetadataAdapter(metadata, this.tempTableStore.getMetadataStore());
        tma.setSession(true);
        this.metadata = tma;
    }

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                  tempTableStore = state.sessionTables;
                }
            }
        }
        if(tempTableStore != null) {
            metadata = new TempMetadataAdapter(this.metadata, tempTableStore.getMetadataStore());
        }
        
        if(workItem != null) {
          return getMetadataForCommand(workItem.getOriginalCommand());
        }

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    private Map[] createProjectedSymbolMetadata(Command originalCommand) throws TeiidComponentException {
        Map[] columnMetadata;
        // Allow command to use temporary metadata
        Map tempMetadata = originalCommand.getTemporaryMetadata();
        if(tempMetadata != null && tempMetadata.size() > 0) {
            TempMetadataAdapter tempFacade = new TempMetadataAdapter(this.metadata, new TempMetadataStore(tempMetadata));
            this.metadata = tempFacade; 
        }
        
        List projectedSymbols = originalCommand.getProjectedSymbols();
        columnMetadata = new Map[projectedSymbols.size()];

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      QueryMetadataInterface metadata) throws QueryParserException,
      QueryResolverException, TeiidComponentException,
      QueryMetadataException {
    ProcedureContainer userCommand = (ProcedureContainer)QueryParser.getQueryParser().parseCommand(userUpdateStr); 
        QueryResolver.resolveCommand(userCommand, metadata);
        metadata = new TempMetadataAdapter(metadata, new TempMetadataStore(userCommand.getTemporaryMetadata()));
        return (CreateUpdateProcedureCommand)QueryResolver.expandCommand(userCommand, metadata, null);
  }

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        this.securityContext.setBatchSize(this.requestMsg.getFetchSize());
        
        this.connector = manager.getExecutionFactory();
      VDBMetaData vdb = requestMsg.getWorkContext().getVDB();
      this.queryMetadata = vdb.getAttachment(QueryMetadataInterface.class);
        this.queryMetadata = new TempMetadataAdapter(this.queryMetadata, new TempMetadataStore());
    this.securityContext.setTransactional(requestMsg.isTransactional());
    }

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