Move common code to AbstractDeploymentConfiguration (#8574)

1 files changed, 128 insertions, 0 deletions

diff --git a/src/com/vaadin/terminal/gwt/server/AbstractDeploymentConfiguration.java b/src/com/vaadin/terminal/gwt/server/AbstractDeploymentConfiguration.java
new file mode 100644
index 0000000000..7402f8fec3
--- /dev/null
+++ b/src/com/vaadin/terminal/gwt/server/AbstractDeploymentConfiguration.java
@@ -0,0 +1,128 @@
+/* 
+@VaadinApache2LicenseForJavaFiles@
+ */
+
+package com.vaadin.terminal.gwt.server;
+
+import java.lang.reflect.Constructor;
+import java.util.Properties;
+
+import com.vaadin.terminal.DeploymentConfiguration;
+import com.vaadin.terminal.WrappedRequest;
+
+public abstract class AbstractDeploymentConfiguration implements
+        DeploymentConfiguration {
+
+    private final Class<?> systemPropertyBaseClass;
+    private final Properties applicationProperties = new Properties();
+
+    public AbstractDeploymentConfiguration(Class<?> systemPropertyBaseClass) {
+        this.systemPropertyBaseClass = systemPropertyBaseClass;
+    }
+
+    @Override
+    public boolean isStandalone(WrappedRequest request) {
+        // TODO Auto-generated method stub
+        return false;
+    }
+
+    @Override
+    public String getApplicationOrSystemProperty(String propertyName,
+            String defaultValue) {
+
+        String val = null;
+
+        // Try application properties
+        val = getApplicationProperty(propertyName);
+        if (val != null) {
+            return val;
+        }
+
+        // Try system properties
+        val = getSystemProperty(propertyName);
+        if (val != null) {
+            return val;
+        }
+
+        return defaultValue;
+    }
+
+    /**
+     * Gets an system property value.
+     * 
+     * @param parameterName
+     *            the Name or the parameter.
+     * @return String value or null if not found
+     */
+    protected String getSystemProperty(String parameterName) {
+        String val = null;
+
+        String pkgName;
+        final Package pkg = systemPropertyBaseClass.getPackage();
+        if (pkg != null) {
+            pkgName = pkg.getName();
+        } else {
+            final String className = systemPropertyBaseClass.getName();
+            pkgName = new String(className.toCharArray(), 0,
+                    className.lastIndexOf('.'));
+        }
+        val = System.getProperty(pkgName + "." + parameterName);
+        if (val != null) {
+            return val;
+        }
+
+        // Try lowercased system properties
+        val = System.getProperty(pkgName + "." + parameterName.toLowerCase());
+        return val;
+    }
+
+    @Override
+    public ClassLoader getClassLoader() {
+        final String classLoaderName = getApplicationOrSystemProperty(
+                "ClassLoader", null);
+        ClassLoader classLoader;
+        if (classLoaderName == null) {
+            classLoader = getClass().getClassLoader();
+        } else {
+            try {
+                final Class<?> classLoaderClass = getClass().getClassLoader()
+                        .loadClass(classLoaderName);
+                final Constructor<?> c = classLoaderClass
+                        .getConstructor(new Class[] { ClassLoader.class });
+                classLoader = (ClassLoader) c
+                        .newInstance(new Object[] { getClass().getClassLoader() });
+            } catch (final Exception e) {
+                throw new RuntimeException(
+                        "Could not find specified class loader: "
+                                + classLoaderName, e);
+            }
+        }
+        return classLoader;
+    }
+
+    /**
+     * Gets an application property value.
+     * 
+     * @param parameterName
+     *            the Name or the parameter.
+     * @return String value or null if not found
+     */
+    protected String getApplicationProperty(String parameterName) {
+
+        String val = applicationProperties.getProperty(parameterName);
+        if (val != null) {
+            return val;
+        }
+
+        // Try lower case application properties for backward compatibility with
+        // 3.0.2 and earlier
+        val = applicationProperties.getProperty(parameterName.toLowerCase());
+
+        return val;
+    }
+
+    @Override
+    public Properties getInitParameters() {
+        return applicationProperties;
+    }
+ }