Package org.apache.cocoon.components.modules.input

Examples of org.apache.cocoon.components.modules.input.InputModule

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    public final void dispose() {
        if (this.selector != null) {
            for (Iterator i = tokens.iterator(); i.hasNext();) {
                Token token = (Token)i.next();
                if (token.hasType(THREADSAFE_MODULE)) {
                    InputModule im = token.getModule();
                    this.selector.release(im);
                }
            }
            this.manager.release(this.selector);
            this.selector = null;
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            Object[] values;
            String cname = getOutputName( tableConf, column.columnConf );

            // obtain input module and read values
            ServiceSelector inputSelector = null;
            InputModule input = null;
            try {
                inputSelector = (ServiceSelector) this.manager.lookup(INPUT_MODULE_SELECTOR);
                if (column.mode != null && inputSelector != null && inputSelector.isSelectable(column.mode)){
                    input = (InputModule) inputSelector.select(column.mode);
                }

                if (column.isSet) {
                    if (getLogger().isDebugEnabled()) {
                        getLogger().debug( "Trying to set column " + cname + " from " + column.mode + " using getAttributeValues method");
                    }
                    values = input.getAttributeValues( cname, column.modeConf, objectModel );
                } else {
                    if (getLogger().isDebugEnabled()) {
                        getLogger().debug( "Trying to set column " + cname + " from " + column.mode + " using getAttribute method");
                    }
                    values = new Object[1];
                    values[0] = input.getAttribute( cname, column.modeConf, objectModel );
                }

                if (values != null) {
                    for ( int i = 0; i < values.length; i++ ) {
                        if (getLogger().isDebugEnabled()) {
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                .length());
        String lmLocation = "";
        Source lmSource = null;
        SourceResolver resolver = null;
        ServiceSelector selector = null;
        InputModule inputModule = null;
        try {
            selector = (ServiceSelector) m_manager.lookup(InputModule.ROLE
                    + "Selector");
            inputModule = (InputModule) selector.select(LM_PREFIX);
            resolver = (SourceResolver) m_manager.lookup(SourceResolver.ROLE);
            lmLocation = (String) inputModule.getAttribute(documentName, null,
                    objectModel);
            if (lmLocation==null)
                throw new SourceException("Could not resolve locationmap location.");
            lmSource = resolver.resolveURI(lmLocation);
        } catch (ServiceException se) {
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                    value = ((Map)list.get(k)).get(s);
                } else {
                    // InputModule expression
                    String inputName = s.substring(0,n);
                    String inputAttribute = s.substring(n + 1);
                    InputModule input = null;
                    try {
                        input = (InputModule) this.inputModuleSelector.select(inputName);
                        value = input.getAttribute(inputAttribute, null, environment.getObjectModel());
                    } catch (Exception e) {
                        if (getLogger().isWarnEnabled()) {
                            getLogger().warn("Problem obtaining attribute " + inputAttribute
                                             + " from " + inputName + " : " + e.getMessage());
                        }
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     * Obtain values from the used InputModule.
     */
    private Object[] getValues(String name) {
        Object[] values = null;
        ComponentSelector iputSelector = null;
        InputModule iput = null;
        try {
            if (this.input != null) {
                // input module is thread safe
                // thus we still have a reference to it
                values = input.getAttributeValues(name,this.inputConf,objectModel);
                if (getLogger().isDebugEnabled())
                    getLogger().debug("cached module "+this.input+" attribute "+name+" returns "+values);
            } else {
                // input was not thread safe
                // so acquire it again
                iputSelector=(ComponentSelector) this.manager.lookup(INPUT_MODULE_SELECTOR);
                if (this.inputName != null
                    && iputSelector != null
                    && iputSelector.hasComponent(this.inputName)) {
                   
                    iput = (InputModule) iputSelector.select(this.inputName);
                }
                if (iput != null) {
                    values = iput.getAttributeValues(name, this.inputConf, objectModel);
                }          
                if (getLogger().isDebugEnabled())
                    getLogger().debug("fresh module "+iput+" attribute "+name+" returns "+values);
            }
        } catch (Exception e) {
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                throw new PatternException("Cannot access input modules selector", ce);
            }
        }
       
        // Get the module
        InputModule module;
        try {
            module = (InputModule)this.selector.select(moduleName);
        } catch(ComponentException ce) {
            throw new PatternException("Cannot get InputModule named '" + moduleName +
                "' in expression '" + this.originalExpr + "'", ce);
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                    }
                    break;

                    case THREADSAFE_MODULE :
                    {
                        InputModule module = (InputModule)items.get(++i);
                        String variable = (String)items.get(++i);
                       
                        try {                   
                            Object value = module.getAttribute(variable, null, objectModel);
                           
                            if (value != null) {
                                result.append(value);
                            }
   
                        } catch(ConfigurationException confEx) {
                            throw new PatternException("Cannot get variable '" + variable +
                                "' in expression '" + this.originalExpr + "'", confEx);
                        }
                    }
                    break;
                   
                    case STATEFUL_MODULE :
                    {
                        InputModule module = null;
                        String moduleName = (String)items.get(++i);
                        String variableName = (String)items.get(++i);
                        try {
                            module = (InputModule)this.selector.select(moduleName);
                           
                            Object value = module.getAttribute(variableName, null, objectModel);
                           
                            if (value != null) {
                                result.append(value);
                            }
                           
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     * @exception RuntimeException if an error occurs
     */
    private Object get(int op, String name, String attr, Map objectModel) throws RuntimeException {

        Object value = null;
        InputModule input = null;
        Configuration conf = null;

        if (this.inputModules == null)
            this.inputModules = new HashMap();
        else
            if (this.inputModules.containsKey(name))
                input = (InputModule) this.inputModules.get(name);

        try {

            if (this.inputSelector == null)
                this.inputSelector = (ComponentSelector) this.manager.lookup(INPUT_MODULE_SELECTOR);
       
            if (input == null) {
                if (this.inputSelector.hasComponent(name)) {
                    input = (InputModule) this.inputSelector.select(name);
                    this.inputModules.put(name, input);
                } else {
                    throw new RuntimeException("No such InputModule: "+name);
                }
            }

            switch (op) {
            case OP_GET:   
                value = input.getAttribute(attr, conf, objectModel);
                break;
            case OP_VALUES:
                value = input.getAttributeValues(attr, conf, objectModel);
                break;
            case OP_NAMES:
                value = input.getAttributeNames(conf, objectModel);
                break;
            };

        } catch (Exception e) {
            throw new CascadingRuntimeException("A problem obtaining a value from "+name+" occurred",e);
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            }
        } else {
            // input was not thread safe
            // so acquire it again
            ComponentSelector iputSelector = null;
            InputModule iput = null;
            try {
                // obtain input module
                iputSelector=(ComponentSelector) this.manager.lookup(INPUT_MODULE_SELECTOR);
                if (inputName != null && iputSelector != null && iputSelector.hasComponent(inputName)){
                    iput = (InputModule) iputSelector.select(inputName);
                }
                if (iput != null) {
                    result = iput.getAttribute(paramName, this.inputConf, objectModel);
                }
            } catch (Exception e) {
                if (getLogger().isWarnEnabled())
                    getLogger().warn("A problem occurred acquiring Parameter '" + paramName
                                     + "' from '" + inputName + "': " + e.getMessage());
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            if (getLogger().isWarnEnabled())
                getLogger().warn("No input module given. FAILING");
            return null;
        }

        InputModule input = null;
        ComponentSelector inputSelector = null;
        Object result = null;

        // one could test whether the input module is ThreadSafe and
        // keep a reference for that instance. Then one would need
        // to implement Disposable in order to release it at EOL
        // That would probably speed up things a lot. Especially, since
        // matchers are invoked very often.
        // Perhaps a CachingWildcardMatcher ?

        try {
            // obtain input module
            inputSelector=(ComponentSelector) this.manager.lookup(INPUT_MODULE_SELECTOR);
            if (inputName != null && inputSelector != null && inputSelector.hasComponent(inputName)){
                input = (InputModule) inputSelector.select(inputName);
            }
            if (input != null) {
                result = input.getAttribute(paramName, this.inputConf, objectModel);
            }
        } catch (Exception e) {
            if (getLogger().isWarnEnabled())
                getLogger().warn("A problem occurred acquiring Parameter '" + paramName
                                 + "' from '" + inputName + "': " + e.getMessage());
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