org.opennms.features.vaadin.pmatrix.engine.UiComponentFactoryImpl.java Source code

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Here is the source code for org.opennms.features.vaadin.pmatrix.engine.UiComponentFactoryImpl.java

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/*******************************************************************************
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 *
 * Copyright (C) 2010-2012 The OpenNMS Group, Inc.
 * OpenNMS(R) is Copyright (C) 1999-2012 The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 *
 * OpenNMS(R) is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenNMS(R).  If not, see:
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 *
 * For more information contact:
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package org.opennms.features.vaadin.pmatrix.engine;

import org.opennms.features.vaadin.pmatrix.model.PmatrixSpecification;
import org.opennms.features.vaadin.pmatrix.model.PmatrixSpecificationList;
import org.opennms.features.vaadin.pmatrix.ui.PmatrixTable;
import org.opennms.features.vaadin.pmatrix.ui.UiComponentFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import com.vaadin.server.VaadinRequest;
import com.vaadin.ui.Component;

@org.springframework.stereotype.Component
@org.springframework.context.annotation.Scope("prototype")
public class UiComponentFactoryImpl implements UiComponentFactory, ApplicationContextAware {
    private static final Logger LOG = LoggerFactory.getLogger(UiComponentFactoryImpl.class);

    private PmatrixSpecificationList pmatrixSpecificationList = null;

    private DataPointMapDao dataPointMapDao;

    public DataPointMapDao getDataPointMapDao() {
        return dataPointMapDao;
    }

    /**
     * this imports the application context in order to use in this factory
     */
    //TODO @Autowired removed because doesn't work in OSGi. Using ApplicationContextAware instead
    private ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    @Autowired
    public void setDataPointMapDao(DataPointMapDao dataPointMapDao) {
        this.dataPointMapDao = dataPointMapDao;
    }

    /**
     * @return the pmatrixSpecificationList
     */
    public PmatrixSpecificationList getPmatrixSpecificationList() {
        return pmatrixSpecificationList;
    }

    /**
     * @param pmatrixSpecificationList the pmatrixSpecificationList to set
     */
    @Autowired
    public void setPmatrixSpecificationList(PmatrixSpecificationList pmatrixSpecificationList) {
        this.pmatrixSpecificationList = pmatrixSpecificationList;
    }

    @Override
    public Component getUiComponent(VaadinRequest request) {

        //works with the following URL examples
        //http://localhost:8080/vaadin-pmatrix/?debug&uiComponent=default
        //http://localhost:8080/vaadin-pmatrix/?uiComponent=default

        String componentName = request.getParameter(COMPONENT_REQUEST_PARAMETER);

        // no component name defined so return null
        if (componentName == null)
            return null;

        //search for specification and construct a component with this name
        if (pmatrixSpecificationList == null)
            throw new IllegalStateException("pmatrixSpecificationList cannot be null");

        PmatrixSpecification pmatrixSpecification = null;
        for (PmatrixSpecification pms : pmatrixSpecificationList.getPmatrixSpecificationList()) {
            if (componentName.equals(pms.getPmatrixName())) {
                pmatrixSpecification = pms;
                break;
            }
        }

        // there is no specification for this pmatrix or else we have an unrecognized request so return null
        if (pmatrixSpecification == null)
            return null;

        // otherwise return the constructed table
        if (LOG.isDebugEnabled())
            LOG.debug("constructing a new pmatrixTable for UI with pmatrixName:'"
                    + pmatrixSpecification.getPmatrixName() + "' pmatrixTitle:'"
                    + pmatrixSpecification.getPmatrixTitle() + "'");

        if (applicationContext == null)
            throw new IllegalStateException("applicationContext cannot be null");

        PmatrixDataSourceImpl pmatrixDataSource = (PmatrixDataSourceImpl) applicationContext
                .getBean("pmatrixDataSource");
        if (pmatrixDataSource == null)
            throw new IllegalStateException("cannot get new pmatrixDatasource instance from application context");

        pmatrixDataSource.setPmatrixSpecification(pmatrixSpecification);

        PmatrixTable pmatrixTable = new PmatrixTable(pmatrixDataSource);

        return pmatrixTable;
    }

    @Override
    public Integer getRefreshRate() {
        if (pmatrixSpecificationList.getRefreshRate() == null) {
            return 10000;
        } else
            return pmatrixSpecificationList.getRefreshRate();
    }

}