[JBEAP-23777] Allow to define one-off patch with name and version separated from base server in patch-config file.

Author: soul2zimate

patch-gen/src/main/java/org/jboss/as/patching/generator/PatchConfigXml.java

@@ -47,13 +47,16 @@ public class PatchConfigXml {
         MAPPER.registerRootElement(new QName(Namespace.PATCH_1_0.getNamespace(), PatchConfigXml_1_0.Element.PATCH_CONFIG.name), INSTANCE);
         MAPPER.registerRootElement(new QName(Namespace.PATCH_1_2.getNamespace(), PatchConfigXml_1_0.Element.PATCH_CONFIG.name), INSTANCE);
         MAPPER.registerRootElement(new QName(Namespace.PATCH_1_3.getNamespace(), PatchConfigXml_1_0.Element.PATCH_CONFIG.name), INSTANCE);
+        MAPPER.registerRootElement(new QName(Namespace.PATCH_1_4.getNamespace(), PatchConfigXml_1_0.Element.PATCH_CONFIG.name), INSTANCE);
+
     }
 
     enum Namespace {
 
         PATCH_1_0("urn:jboss:patch-config:1.0"),
         PATCH_1_2("urn:jboss:patch-config:1.2"),
         PATCH_1_3("urn:jboss:patch-config:1.3"),
+        PATCH_1_4("urn:jboss:patch-config:1.4"),
         UNKNOWN(null);
 
         private final String namespace;

patch-gen/src/main/java/org/jboss/as/patching/generator/PatchConfigXml_1_0.java

@@ -443,6 +443,7 @@ private void parseOneOffPatchType(final XMLExtendedStreamReader reader, final Pa
 
         String name = null;
         String appliesTo = null;
+        boolean overrideIdentity = false;
 
         Set<Attribute> required = Collections.emptySet(); // EnumSet.of(Attribute.APPLIES_TO_VERSION, Attribute.RESULTING_VERSION);
 
@@ -458,6 +459,9 @@ private void parseOneOffPatchType(final XMLExtendedStreamReader reader, final Pa
                 case APPLIES_TO_VERSION:
                     appliesTo = value;
                     break;
+                case OVERRIDE_IDENTITY:;
+                    overrideIdentity = Boolean.parseBoolean(value);
+                    break;
                 default:
                     throw unexpectedAttribute(reader, i);
             }
@@ -469,8 +473,17 @@ private void parseOneOffPatchType(final XMLExtendedStreamReader reader, final Pa
             throw missingRequired(reader, required);
         }
 
+        if (overrideIdentity && (name == null || appliesTo == null)) {
+            String msg = String.format("When %s=\"true\", all of %s and %s must be set",
+                    Attribute.OVERRIDE_IDENTITY.name,
+                    Attribute.NAME.name,
+                    Attribute.APPLIES_TO_VERSION.name);
+            throw new XMLStreamException(msg, reader.getLocation());
+        }
+
         builder.setOneOffType(appliesTo);
         builder.setAppliesToName(name);
+        builder.setOverrideIdentity(overrideIdentity);
 
         patchTypeConfigured = true;
     }

patch-gen/src/main/java/org/jboss/as/patching/generator/PatchGenerator.java

@@ -165,7 +165,13 @@ private void process() throws PatchingException, IOException, XMLStreamException
                 }
                 builder.upgradeIdentity(name, version, toVersion);
             } else {
-                builder.oneOffPatchIdentity(base.getName(), base.getVersion());
+                if (patchConfig.isOverrideIdentity()) {
+                    // This allows to build one-off patch based on "name" and "applies-to-version", to e.g.
+                    // have a totally separately named and versioned patch stream from the servers used to create the diff.
+                    builder.oneOffPatchIdentity(patchConfig.getAppliesToProduct(), patchConfig.getAppliesToVersion());
+                } else {
+                    builder.oneOffPatchIdentity(base.getName(), base.getVersion());
+                }
             }
 
             // Create the resulting patch