Added provider to register and retrieve command handlers.

mifosng-provider/src/test/java/org/mifosplatform/commands/provider/CommandHandlerProviderTest.java

@@ -0,0 +1,56 @@
+/**
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package org.mifosplatform.commands.provider;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.mifosplatform.commands.exception.UnsupportedCommandException;
+import org.mifosplatform.commands.handler.NewCommandSourceHandler;
+import org.mifosplatform.infrastructure.core.api.JsonCommand;
+import org.mifosplatform.infrastructure.core.data.CommandProcessingResult;
+
+public class CommandHandlerProviderTest {
+
+    public CommandHandlerProviderTest() {
+        super();
+    }
+
+    @Test
+    public void shouldRegisterHandler() {
+        final CommandHandlerProvider provider = new CommandHandlerProvider();
+        try {
+            new ValidCommandHandler(provider);
+        } catch (NullPointerException pex) {
+            Assert.fail();
+        }
+
+        try {
+            final Long testCommandId = 815L;
+
+            final NewCommandSourceHandler registeredHandler = provider.getHandler("HUMAN", "UPDATE");
+
+            final CommandProcessingResult result =
+                    registeredHandler.processCommand(
+                            JsonCommand.fromExistingCommand(testCommandId, null, null, null, null, null, null, null, null));
+            Assert.assertEquals(testCommandId, result.commandId());
+        } catch (UnsupportedCommandException ucex) {
+            Assert.fail();
+        }
+    }
+
+    @Test(expected = NullPointerException.class)
+    public void shouldNotRegisterHandlerAndThrowNullPointerException() {
+        final CommandHandlerProvider provider = new CommandHandlerProvider();
+        new InvalidCommandHandler(provider);
+    }
+
+    @Test(expected = UnsupportedCommandException.class)
+    public void shouldThrowUnsupportedCommandException() {
+        final CommandHandlerProvider provider = new CommandHandlerProvider();
+        provider.getHandler("WHATEVER", "DOSOMETHING");
+
+    }
+}

mifosng-provider/src/test/java/org/mifosplatform/commands/provider/InvalidCommandHandler.java

@@ -0,0 +1,23 @@
+/**
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package org.mifosplatform.commands.provider;
+
+import org.mifosplatform.commands.handler.NewCommandSourceHandler;
+import org.mifosplatform.infrastructure.core.api.JsonCommand;
+import org.mifosplatform.infrastructure.core.data.CommandProcessingResult;
+
+public class InvalidCommandHandler implements NewCommandSourceHandler {
+
+    public InvalidCommandHandler(final CommandHandlerProvider commandHandlerProvider) {
+        super();
+        commandHandlerProvider.registerHandler(this);
+    }
+
+    @Override
+    public CommandProcessingResult processCommand(JsonCommand command) {
+        return CommandProcessingResult.commandOnlyResult(command.commandId());
+    }
+}

mifosng-provider/src/test/java/org/mifosplatform/commands/provider/ValidCommandHandler.java

@@ -0,0 +1,25 @@
+/**
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package org.mifosplatform.commands.provider;
+
+import org.mifosplatform.commands.annotation.CommandType;
+import org.mifosplatform.commands.handler.NewCommandSourceHandler;
+import org.mifosplatform.infrastructure.core.api.JsonCommand;
+import org.mifosplatform.infrastructure.core.data.CommandProcessingResult;
+
+@CommandType(entity = "HUMAN", action = "UPDATE")
+public class ValidCommandHandler implements NewCommandSourceHandler {
+
+    public ValidCommandHandler(final CommandHandlerProvider commandHandlerProvider) {
+        super();
+        commandHandlerProvider.registerHandler(this);
+    }
+
+    @Override
+    public CommandProcessingResult processCommand(JsonCommand command) {
+        return CommandProcessingResult.commandOnlyResult(command.commandId());
+    }
+}