Merge pull request #1031 from rishy/Batch-API

added client activation, loan approval and loan disbursal commands

mifosng-provider/src/main/java/org/mifosplatform/batch/command/CommandStrategyProvider.java

@@ -76,6 +76,10 @@ public class CommandStrategyProvider {
                 .put(CommandContext.resource("loans\\/\\d+\\/charges").method("GET").build(), "collectChargesCommandStrategy");
         this.commandStrategies.put(CommandContext.resource("clients\\/\\d+\\?command=activate").method("POST").build(),
                 "activateClientCommandStrategy");
+        this.commandStrategies.put(CommandContext.resource("loans\\/\\d+\\?command=approve").method("POST").build(),
+                "approveLoanCommandStrategy");
+        this.commandStrategies.put(CommandContext.resource("loans\\/\\d+\\?command=disburse").method("POST").build(),
+                "disburseLoanCommandStrategy");
     }
 
 }

mifosng-provider/src/main/java/org/mifosplatform/batch/command/internal/ActivateClientCommandStrategy.java

@@ -51,8 +51,7 @@ public class ActivateClientCommandStrategy implements CommandStrategy {
         // Try-catch blocks to map exceptions to appropriate status codes
         try {
 
-            // Calls 'activate' function from 'ClientsApiResource' to create a new
-            // client
+            // Calls 'activate' function from 'ClientsApiResource' to activate a client
             responseBody = clientsApiResource.activate(clientId, "activate", request.getBody());
 
             response.setStatusCode(200);

mifosng-provider/src/main/java/org/mifosplatform/batch/command/internal/ApproveLoanCommandStrategy.java

@@ -0,0 +1,74 @@
+package org.mifosplatform.batch.command.internal;
+
+import javax.ws.rs.core.UriInfo;
+
+import org.mifosplatform.batch.command.CommandStrategy;
+import org.mifosplatform.batch.domain.BatchRequest;
+import org.mifosplatform.batch.domain.BatchResponse;
+import org.mifosplatform.batch.exception.ErrorHandler;
+import org.mifosplatform.batch.exception.ErrorInfo;
+import org.mifosplatform.portfolio.loanaccount.api.LoansApiResource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+/**
+ * Implements {@link org.mifosplatform.batch.command.CommandStrategy} to handle
+ * approval of a pending loan. It passes the contents of the body from the
+ * BatchRequest to
+ * {@link org.mifosplatform.portfolio.client.api.LoansApiResource} and gets
+ * back the response. This class will also catch any errors raised by
+ * {@link org.mifosplatform.portfolio.client.api.LoansApiResource} and map
+ * those errors to appropriate status codes in BatchResponse.
+ * 
+ * @author Rishabh Shukla
+ * 
+ * @see org.mifosplatform.batch.command.CommandStrategy
+ * @see org.mifosplatform.batch.domain.BatchRequest
+ * @see org.mifosplatform.batch.domain.BatchResponse
+ */
+@Component
+public class ApproveLoanCommandStrategy implements CommandStrategy {
+
+    private final LoansApiResource loansApiResource;
+
+    @Autowired
+    public ApproveLoanCommandStrategy(final LoansApiResource loansApiResource) {
+        this.loansApiResource = loansApiResource;
+    }
+
+    @Override
+    public BatchResponse execute(final BatchRequest request, @SuppressWarnings("unused") UriInfo uriInfo) {
+
+        final BatchResponse response = new BatchResponse();
+        final String responseBody;
+
+        response.setRequestId(request.getRequestId());
+        response.setHeaders(request.getHeaders());
+        
+        final String[] pathParameters = request.getRelativeUrl().split("/");
+        Long loanId = Long.parseLong(pathParameters[1].substring(0, pathParameters[1].indexOf("?")));
+
+        // Try-catch blocks to map exceptions to appropriate status codes
+        try {
+
+            // Calls 'approve' function from 'LoansApiResource' to approve a loan          
+            responseBody = loansApiResource.stateTransitions(loanId, "approve", request.getBody());
+
+            response.setStatusCode(200);
+            // Sets the body of the response after the successful approval of a loan
+            response.setBody(responseBody);
+
+        } catch (RuntimeException e) {
+
+            // Gets an object of type ErrorInfo, containing information about
+            // raised exception
+            ErrorInfo ex = ErrorHandler.handler(e);
+
+            response.setStatusCode(ex.getStatusCode());
+            response.setBody(ex.getMessage());
+        }
+
+        return response;
+    }
+
+}

mifosng-provider/src/main/java/org/mifosplatform/batch/command/internal/DisburseLoanCommandStrategy.java

@@ -0,0 +1,75 @@
+package org.mifosplatform.batch.command.internal;
+
+import javax.ws.rs.core.UriInfo;
+
+import org.mifosplatform.batch.command.CommandStrategy;
+import org.mifosplatform.batch.domain.BatchRequest;
+import org.mifosplatform.batch.domain.BatchResponse;
+import org.mifosplatform.batch.exception.ErrorHandler;
+import org.mifosplatform.batch.exception.ErrorInfo;
+import org.mifosplatform.portfolio.loanaccount.api.LoansApiResource;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+/**
+ * Implements {@link org.mifosplatform.batch.command.CommandStrategy} to handle
+ * disburse of a loan. It passes the contents of the body from the
+ * BatchRequest to
+ * {@link org.mifosplatform.portfolio.client.api.LoansApiResource} and gets
+ * back the response. This class will also catch any errors raised by
+ * {@link org.mifosplatform.portfolio.client.api.LoansApiResource} and map
+ * those errors to appropriate status codes in BatchResponse.
+ * 
+ * @author Rishabh Shukla
+ * 
+ * @see org.mifosplatform.batch.command.CommandStrategy
+ * @see org.mifosplatform.batch.domain.BatchRequest
+ * @see org.mifosplatform.batch.domain.BatchResponse
+ */
+@Component
+public class DisburseLoanCommandStrategy implements CommandStrategy {
+
+    private final LoansApiResource loansApiResource;
+
+    @Autowired
+    public DisburseLoanCommandStrategy(final LoansApiResource loansApiResource) {
+        this.loansApiResource = loansApiResource;
+    }
+
+    @Override
+    public BatchResponse execute(final BatchRequest request, @SuppressWarnings("unused") UriInfo uriInfo) {
+
+        final BatchResponse response = new BatchResponse();
+        final String responseBody;
+
+        response.setRequestId(request.getRequestId());
+        response.setHeaders(request.getHeaders());
+        
+        final String[] pathParameters = request.getRelativeUrl().split("/");
+        Long loanId = Long.parseLong(pathParameters[1].substring(0, pathParameters[1].indexOf("?")));
+
+        // Try-catch blocks to map exceptions to appropriate status codes
+        try {
+
+            // Calls 'disburse' function from 'LoansApiResource' to disburse a loan          
+            responseBody = loansApiResource.stateTransitions(loanId, "disburse", request.getBody());
+
+            response.setStatusCode(200);
+            
+            // Sets the body of the response after the successful disbursal of the loan
+            response.setBody(responseBody);
+
+        } catch (RuntimeException e) {
+
+            // Gets an object of type ErrorInfo, containing information about
+            // raised exception
+            ErrorInfo ex = ErrorHandler.handler(e);
+
+            response.setStatusCode(ex.getStatusCode());
+            response.setBody(ex.getMessage());
+        }
+
+        return response;
+    }
+
+}