WELD-1791 Introduce ExternalConfigurationBuilder

weld-spi/src/main/java/org/jboss/weld/configuration/spi/helpers/ExternalConfigurationBuilder.java

@@ -0,0 +1,66 @@
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2014, Red Hat, Inc., and individual contributors
+ * by the @authors tag. See the copyright.txt in the distribution for a
+ * full listing of individual contributors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jboss.weld.configuration.spi.helpers;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.jboss.weld.configuration.spi.ExternalConfiguration;
+
+/**
+ * A builder for building immutable {@link ExternalConfiguration}
+ *
+ * @author Jozef Hartinger
+ *
+ */
+public final class ExternalConfigurationBuilder {
+
+    private final Map<String, Object> builder = new HashMap<String, Object>();
+
+    public ExternalConfigurationBuilder add(String key, Object value) {
+        builder.put(key, value);
+        return this;
+    }
+
+    public ExternalConfiguration build() {
+        return new ExternalConfigurationImpl(Collections.unmodifiableMap(builder));
+    }
+
+    private static class ExternalConfigurationImpl implements ExternalConfiguration {
+
+        private final Map<String, Object> properties;
+
+        private ExternalConfigurationImpl(Map<String, Object> properties) {
+            this.properties = properties;
+        }
+
+        @Override
+        public Map<String, Object> getConfigurationProperties() {
+            return properties;
+        }
+
+        @Override
+        public void cleanup() {
+        }
+
+        @Override
+        public String toString() {
+            return "ExternalConfigurationImpl [properties=" + properties + "]";
+        }
+    }
+}