0031841: Make POS Initial Validations extensible by modules

diff --git a/src/org/openbravo/retail/posterminal/CustomInitialValidation.java b/src/org/openbravo/retail/posterminal/CustomInitialValidation.java
new file mode 100644
--- /dev/null
+++ b/src/org/openbravo/retail/posterminal/CustomInitialValidation.java
@@ -0,0 +1,17 @@
+/*
+ ************************************************************************************
+ * Copyright (C) 2016 Openbravo S.L.U.
+ * Licensed under the Openbravo Commercial License version 1.0
+ * You may obtain a copy of the License at http://www.openbravo.com/legal/obcl.html
+ * or in the legal folder of this module distribution.
+ ************************************************************************************
+ */
+
+package org.openbravo.retail.posterminal;
+
+import org.codehaus.jettison.json.JSONException;
+
+public abstract class CustomInitialValidation {
+
+  public abstract void validation(OBPOSApplications posTerminal) throws JSONException;
+}
diff --git a/src/org/openbravo/retail/posterminal/InitialValidations.java b/src/org/openbravo/retail/posterminal/InitialValidations.java
--- a/src/org/openbravo/retail/posterminal/InitialValidations.java
+++ b/src/org/openbravo/retail/posterminal/InitialValidations.java
@@ -1,6 +1,6 @@
 /*
  ************************************************************************************
- * Copyright (C) 2012-2015 Openbravo S.L.U.
+ * Copyright (C) 2012-2016 Openbravo S.L.U.
  * Licensed under the Openbravo Commercial License version 1.0
  * You may obtain a copy of the License at http://www.openbravo.com/legal/obcl.html
  * or in the legal folder of this module distribution.
@@ -8,9 +8,14 @@
  */
 package org.openbravo.retail.posterminal;
 
+import java.util.ArrayList;
 import java.util.List;
 
+import javax.enterprise.inject.spi.Bean;
+import javax.enterprise.inject.spi.BeanManager;
+
 import org.codehaus.jettison.json.JSONException;
+import org.openbravo.base.weld.WeldUtils;
 import org.openbravo.dal.core.OBContext;
 import org.openbravo.dal.service.OBDal;
 import org.openbravo.dal.service.OBQuery;
@@ -132,5 +137,19 @@
       }
     }
 
+    for (CustomInitialValidation customInitialValidation : getCustomInitialValidations()) {
+      customInitialValidation.validation(posTerminal);
+    }
+
+  }
+
+  private static List<CustomInitialValidation> getCustomInitialValidations() {
+    List<CustomInitialValidation> result = new ArrayList<CustomInitialValidation>();
+    BeanManager bm = WeldUtils.getStaticInstanceBeanManager();
+    for (Bean<?> restrictionBean : bm.getBeans(CustomInitialValidation.class)) {
+      result.add((CustomInitialValidation) bm.getReference(restrictionBean,
+          CustomInitialValidation.class, bm.createCreationalContext(restrictionBean)));
+    }
+    return result;
   }
 }
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