Made de jndi key under which the datasources are looked up configurable

src/main/java/be/fluid_it/tools/dropwizard/box/config/JEEDataSourceConfiguration.java

@@ -16,6 +16,12 @@
  * {@link DataSource} configured in your J2EE Container.
  */
 public class JEEDataSourceConfiguration {
+    // The default key matches Tomcat
+    // (Dependending on the target application server used you should eventually override the default)
+    // See https://tomcat.apache.org/tomcat-8.0-doc/jndi-resources-howto.html
+    @NotNull
+    private String datasourcesJndKey = "java:comp/env";
+
     @NotNull
     private String name;
 
@@ -39,4 +45,11 @@ public String getName() {
         return name;
     }
 
+    /**
+     * @return JNDI key under which the datasources are registered.
+     */
+    @JsonProperty
+    public String getDatasourcesJndiKey() {
+        return this.datasourcesJndKey;
+    }
 }

src/main/java/be/fluid_it/tools/dropwizard/box/datasource/JEEDataSourceFactory.java

@@ -41,7 +41,7 @@ public Map<String, String> getProperties() {
     @Override
     public ManagedDataSource build(MetricRegistry metricRegistry, String name) {
         try {
-            return new JEEManagedDataSource(this.configuration.getName());
+            return new JEEManagedDataSource(this.configuration.getDatasourcesJndiKey(), this.configuration.getName());
         } catch (NamingException e) {
             throw new IllegalStateException("An error has occured while opening datasource " + name, e);
         }

src/main/java/be/fluid_it/tools/dropwizard/box/datasource/JEEManagedDataSource.java

@@ -14,15 +14,14 @@
 import io.dropwizard.db.ManagedDataSource;
 
 /**
- * A {@link DataSource} configured in JEE Container available through JNDI
- * under java:comp/env context.
+ * A {@link DataSource} configured in JEE Container available through JNDI.
  */
 public class JEEManagedDataSource implements ManagedDataSource {
     private DataSource jeeDatasource;
 
-    public JEEManagedDataSource(String dataSourceName) throws NamingException {
+    public JEEManagedDataSource(String datasourcesJndiKey, String dataSourceName) throws NamingException {
         InitialContext ic = new InitialContext();
-        Context envCtx = (Context) ic.lookup("java:comp/env");
+        Context envCtx = (Context) ic.lookup(datasourcesJndiKey);
         jeeDatasource = (DataSource) envCtx.lookup(dataSourceName);
     }