SettingsWrapper.java

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package edu.harvard.iq.dataverse;

import edu.harvard.iq.dataverse.settings.Setting;
import edu.harvard.iq.dataverse.settings.SettingsServiceBean;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import javax.ejb.EJB;
import javax.faces.view.ViewScoped;
import javax.inject.Named;

/**
 *
 * @author gdurand
 */
@ViewScoped
@Named
public class SettingsWrapper implements java.io.Serializable {

    @EJB
    SettingsServiceBean settingService;

    private Map<String, String> settingsMap;
    
    /**
     * Values that are considered as "true".
     * @see #isTrue(java.lang.String, boolean) 
     */
    private static final Set<String> TRUE_VALUES = Collections.unmodifiableSet(
            new TreeSet<>( Arrays.asList("1","yes", "true","allow")));

    public String get(String settingKey) {
        if (settingsMap == null) {
            initSettingsMap();
        }
        
        return settingsMap.get(settingKey);
    }
    
    public boolean isTrueForKey(String settingKey, boolean safeDefaultIfKeyNotFound) {
        if (settingsMap == null) {
            initSettingsMap();
        }
        
        String val = settingsMap.get(settingKey);;
        return ( val==null ) ? safeDefaultIfKeyNotFound : TRUE_VALUES.contains(val.trim().toLowerCase() );
    }

    private void initSettingsMap() {
        // initialize settings map
        settingsMap = new HashMap<>();
        for (Setting setting : settingService.listAll()) {
            settingsMap.put(setting.getName(), setting.getContent());
        }
    }

    private String guidesBaseUrl = null; 
    
    public String getGuidesBaseUrl() {
        if (guidesBaseUrl == null) {
            String saneDefault = "http://guides.dataverse.org";
        
            guidesBaseUrl = get(":GuidesBaseUrl");
            if (guidesBaseUrl == null) {
                guidesBaseUrl = saneDefault + "/en"; 
            } else {
                guidesBaseUrl = guidesBaseUrl + "/en";
            }
            // TODO: 
            // hard-coded "en"; will need to be configuratble once 
            // we have support for other languages. 
            // TODO: 
            // remove a duplicate of this method from SystemConfig
        }
        return guidesBaseUrl;
    }

}