Implement persistence test for policies

The unit test MonitoringPolicySerializationTest tests
persistence for policies and shows how persistence works.

Issue-ID: POLICY-1195
Change-Id: I933eb538238f9ccd41ce69614e0c9afcac869c29
Signed-off-by: liamfallon <liam.fallon@est.tech>

6 files changed, 47 insertions, 33 deletions

diff --git a/models-tosca/src/main/java/org/onap/policy/models/tosca/legacy/mapping/LegacyOperationalPolicyMapper.java b/models-tosca/src/main/java/org/onap/policy/models/tosca/legacy/mapping/LegacyOperationalPolicyMapper.java
index 781602a7e..2c0d5084d 100644
--- a/models-tosca/src/main/java/org/onap/policy/models/tosca/legacy/mapping/LegacyOperationalPolicyMapper.java
+++ b/models-tosca/src/main/java/org/onap/policy/models/tosca/legacy/mapping/LegacyOperationalPolicyMapper.java
@@ -54,7 +54,7 @@ public class LegacyOperationalPolicyMapper
         // TODO: Check if this is the correct way to set the policy type version
         toscaPolicy.setType(new PfConceptKey("SomeDerivedPolicyType", "1.0.0"));
 
-        Map<String, Object> propertyMap = new HashMap<>();
+        Map<String, String> propertyMap = new HashMap<>();
         toscaPolicy.setProperties(propertyMap);
         toscaPolicy.getProperties().put("Content", legacyOperationalPolicy.getContent());
 
diff --git a/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/concepts/ToscaEntityType.java b/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/concepts/ToscaEntityType.java
index 7eaf58b2e..f2ae05119 100644
--- a/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/concepts/ToscaEntityType.java
+++ b/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/concepts/ToscaEntityType.java
@@ -20,20 +20,17 @@
 
 package org.onap.policy.models.tosca.simple.concepts;
 
-import com.google.gson.annotations.SerializedName;
-
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.TreeMap;
 
-import javax.persistence.CascadeType;
+import javax.persistence.AttributeOverride;
+import javax.persistence.AttributeOverrides;
 import javax.persistence.Column;
+import javax.persistence.ElementCollection;
 import javax.persistence.EmbeddedId;
-import javax.persistence.Inheritance;
-import javax.persistence.InheritanceType;
 import javax.persistence.MappedSuperclass;
-import javax.persistence.OneToMany;
 
 import lombok.Data;
 import lombok.EqualsAndHashCode;
@@ -54,7 +51,6 @@ import org.onap.policy.models.base.PfValidationResult.ValidationResult;
  * Class to represent the EntrySchema of list/map property in TOSCA definition.
  */
 @MappedSuperclass
-@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
 @Data
 @EqualsAndHashCode(callSuper = false)
 public class ToscaEntityType extends PfConcept {
@@ -63,15 +59,22 @@ public class ToscaEntityType extends PfConcept {
     @EmbeddedId
     private PfConceptKey key;
 
-    @SerializedName("derived_from")
-    @Column(name = "derivedFrom")
+    // @formatter:off
+    @Column
+    @AttributeOverrides({
+        @AttributeOverride(name = "name",
+                           column = @Column(name = "derived_from_name")),
+        @AttributeOverride(name = "version",
+                           column = @Column(name = "derived_from_version"))
+        })
     private PfConceptKey derivedFrom;
 
-    @OneToMany(cascade = CascadeType.ALL)
+    @ElementCollection
     private Map<String, String> metadata;
 
-    @Column(name = "description")
+    @Column
     private String description;
+    // @formatter:on
 
     /**
      * The Default Constructor creates a {@link ToscaEntityType} object with a null key.
diff --git a/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/concepts/ToscaPolicy.java b/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/concepts/ToscaPolicy.java
index af94af08d..e08079c40 100644
--- a/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/concepts/ToscaPolicy.java
+++ b/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/concepts/ToscaPolicy.java
@@ -28,6 +28,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 
+import javax.persistence.AttributeOverride;
+import javax.persistence.AttributeOverrides;
 import javax.persistence.Column;
 import javax.persistence.ElementCollection;
 import javax.persistence.Entity;
@@ -63,14 +65,23 @@ import org.onap.policy.models.base.PfValidationResult.ValidationResult;
 public class ToscaPolicy extends ToscaEntityType {
     private static final long serialVersionUID = 3265174757061982805L;
 
+    // @formatter:off
     @Column
+    @AttributeOverrides({
+        @AttributeOverride(name = "name",
+                           column = @Column(name = "type_name")),
+        @AttributeOverride(name = "version",
+                           column = @Column(name = "type_version"))
+        })
     private PfConceptKey type;
 
     @ElementCollection
-    private Map<String, Object> properties;
+    @Column(length = 10000)
+    private Map<String, String> properties;
 
     @ElementCollection
     private List<PfConceptKey> targets;
+    // @formatter:on
 
     /**
      * The Default Constructor creates a {@link ToscaPolicy} object with a null key.
@@ -166,7 +177,7 @@ public class ToscaPolicy extends ToscaEntityType {
     private PfValidationResult validateProperties(@NonNull final PfValidationResult resultIn) {
         PfValidationResult result = resultIn;
 
-        for (Entry<String, Object> propertyEntry : properties.entrySet()) {
+        for (Entry<String, String> propertyEntry : properties.entrySet()) {
             if (!ParameterValidationUtils.validateStringParameter(propertyEntry.getKey())) {
                 result.addValidationMessage(new PfValidationMessage(getKey(), this.getClass(), ValidationResult.INVALID,
                         "policy property key may not be null "));
diff --git a/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaPoliciesJsonAdapter.java b/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaPoliciesJsonAdapter.java
index 3f25b708f..53088d637 100644
--- a/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaPoliciesJsonAdapter.java
+++ b/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaPoliciesJsonAdapter.java
@@ -71,8 +71,7 @@ public class ToscaPoliciesJsonAdapter implements JsonSerializer<ToscaPolicies>,
         JsonArray policiesJsonArray = new JsonArray();
 
         for (ToscaPolicy policy: policies.getConceptMap().values()) {
-            JsonElement policyEntry = new  ToscaPolicyJsonAdapter().serialize(policy, type, context);
-            policiesJsonArray.add(policyEntry);
+            policiesJsonArray.add(new ToscaPolicyJsonAdapter().serialize(policy, type, context));
         }
 
         return policiesJsonArray;
diff --git a/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaPolicyJsonAdapter.java b/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaPolicyJsonAdapter.java
index aef854710..95b4b3bba 100644
--- a/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaPolicyJsonAdapter.java
+++ b/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaPolicyJsonAdapter.java
@@ -21,6 +21,8 @@
 
 package org.onap.policy.models.tosca.simple.serialization;
 
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
 import com.google.gson.JsonDeserializationContext;
 import com.google.gson.JsonDeserializer;
 import com.google.gson.JsonElement;
@@ -58,6 +60,8 @@ public class ToscaPolicyJsonAdapter implements JsonSerializer<ToscaPolicy>, Json
     private static final String METADATA = "metadata";
     private static final String PROPERTIES = "properties";
 
+    private final Gson gson = new GsonBuilder().setPrettyPrinting().create();
+
     @Override
     public ToscaPolicy deserialize(@NonNull final JsonElement policyElement, @NonNull final Type type,
             @NonNull final JsonDeserializationContext context) {
@@ -94,9 +98,7 @@ public class ToscaPolicyJsonAdapter implements JsonSerializer<ToscaPolicy>, Json
             final JsonObject policyMetadataMapObject = policyJsonObject.get(METADATA).getAsJsonObject();
             Map<String, String> policyMetadataMap = new HashMap<>();
             for (Entry<String, JsonElement> entry : policyMetadataMapObject.entrySet()) {
-                final String policyMetadataEntryKey = entry.getKey();
-                final String policyMetadataEntryValue = entry.getValue().getAsString();
-                policyMetadataMap.put(policyMetadataEntryKey, policyMetadataEntryValue);
+                policyMetadataMap.put(entry.getKey(), entry.getValue().getAsString());
             }
             policy.setMetadata(policyMetadataMap);
         }
@@ -104,11 +106,14 @@ public class ToscaPolicyJsonAdapter implements JsonSerializer<ToscaPolicy>, Json
         // Set properties
         if (policyJsonObject.has(PROPERTIES)) {
             final JsonObject policyPropertiesMapObject = policyJsonObject.get(PROPERTIES).getAsJsonObject();
-            Map<String, Object> propertiesMap = new HashMap<>();
+            Map<String, String> propertiesMap = new HashMap<>();
             for (Entry<String, JsonElement> entry : policyPropertiesMapObject.entrySet()) {
-                final String policyPropertiesEntryKey = entry.getKey();
-                final JsonElement policyPropertiesEntryValue = entry.getValue();
-                propertiesMap.put(policyPropertiesEntryKey, policyPropertiesEntryValue);
+                // TODO: This is a HACK, we need to validate the properties against their
+                // TODO: their data type in their policy type definition in TOSCA, which means reading
+                // TODO: the policy type from the database and parsing the property value object correctly
+                // TODO: Here we are simply serializing the property value into a string and storing it
+                // TODO: unvalidated into the database
+                propertiesMap.put(entry.getKey(), gson.toJson(entry.getValue()));
             }
             policy.setProperties(propertiesMap);
         }
@@ -136,9 +141,7 @@ public class ToscaPolicyJsonAdapter implements JsonSerializer<ToscaPolicy>, Json
         if (policy.getMetadata() != null) {
             JsonObject metadataMapObject = new JsonObject();
             for (Entry<String, String> entry : policy.getMetadata().entrySet()) {
-                final String entryKey = entry.getKey();
-                final String entryVal = entry.getValue();
-                metadataMapObject.addProperty(entryKey, entryVal);
+                metadataMapObject.addProperty(entry.getKey(), entry.getValue());
             }
             policyValJsonObject.add(METADATA, metadataMapObject);
         }
@@ -146,13 +149,10 @@ public class ToscaPolicyJsonAdapter implements JsonSerializer<ToscaPolicy>, Json
         // Add properties
         if (policy.getProperties() != null) {
             JsonObject propertiesMapObject = new JsonObject();
-            for (Entry<String, Object> entry : policy.getProperties().entrySet()) {
-                final String entryKey = entry.getKey();
-                JsonElement entryVal = null;
-                if (entry.getValue() instanceof JsonElement) {
-                    entryVal = (JsonElement) entry.getValue();
-                }
-                propertiesMapObject.add(entryKey, entryVal);
+            for (Entry<String, String> entry : policy.getProperties().entrySet()) {
+                // TODO: This is the other direction of the HACK
+                JsonObject valueObject = gson.fromJson(entry.getValue(), JsonObject.class);
+                propertiesMapObject.add(entry.getKey(), valueObject);
             }
             policyValJsonObject.add(PROPERTIES, propertiesMapObject);
         }
diff --git a/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaServiceTemplateMessageBodyHandler.java b/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaServiceTemplateMessageBodyHandler.java
index a386a9cc5..cf3e668b3 100644
--- a/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaServiceTemplateMessageBodyHandler.java
+++ b/models-tosca/src/main/java/org/onap/policy/models/tosca/simple/serialization/ToscaServiceTemplateMessageBodyHandler.java
@@ -56,6 +56,7 @@ public class ToscaServiceTemplateMessageBodyHandler extends GsonMessageBodyHandl
                 .registerTypeAdapter(ToscaTopologyTemplate.class, new ToscaTopologyTemplateJsonAdapter())
                 .registerTypeAdapter(ToscaPolicies.class, new ToscaPoliciesJsonAdapter())
                 .registerTypeAdapter(ToscaPolicy.class, new ToscaPolicyJsonAdapter())
+                .setPrettyPrinting()
                 .create()
         );
         // @formatter:on