ARC-1700: Spicegen: Add permission factory methods

api/src/main/java/com/oviva/spicegen/api/CheckPermission.java

@@ -0,0 +1,30 @@
+package com.oviva.spicegen.api;
+
+import com.oviva.spicegen.api.internal.CheckPermissionImpl;
+
+public interface CheckPermission {
+
+  static Builder newBuilder() {
+    return new CheckPermissionImpl.Builder();
+  }
+
+  ObjectRef resource();
+
+  String permission();
+
+  SubjectRef subject();
+
+  Consistency consistency();
+
+  interface Builder {
+    Builder resource(ObjectRef resource);
+
+    Builder permission(String permission);
+
+    Builder subject(SubjectRef subject);
+
+    Builder consistency(Consistency consistency);
+
+    CheckPermission build();
+  }
+}

api/src/main/java/com/oviva/spicegen/api/Consistency.java

@@ -0,0 +1,26 @@
+package com.oviva.spicegen.api;
+
+import com.oviva.spicegen.api.internal.ConsistencyImpl;
+
+public interface Consistency {
+
+  String consistencyToken();
+
+  Requirement requirement();
+
+  static Consistency fullyConsistent() {
+    return ConsistencyImpl.fullyConsistent();
+  }
+
+  static Consistency atLeastAsFreshAs(String consistencyToken) {
+    if (consistencyToken == null) {
+      return ConsistencyImpl.fullyConsistent();
+    }
+    return new ConsistencyImpl(Consistency.Requirement.AT_LEAST_AS_FRESH, consistencyToken);
+  }
+
+  enum Requirement {
+    FULLY_CONSISTENT,
+    AT_LEAST_AS_FRESH
+  }
+}

api/src/main/java/com/oviva/spicegen/api/ObjectRef.java

@@ -1,21 +1,20 @@
 package com.oviva.spicegen.api;
 
+import com.oviva.spicegen.api.internal.ObjectRefImpl;
+
 public interface ObjectRef {
   String kind();
 
   String id();
 
   static ObjectRef of(String kind, String id) {
-    return new ObjectRef() {
-      @Override
-      public String kind() {
-        return kind;
-      }
+    if (kind == null) {
+      throw new IllegalArgumentException("kind must  not be null");
+    }
+    if (id == null) {
+      throw new IllegalArgumentException("id must  not be null");
+    }
 
-      @Override
-      public String id() {
-        return id;
-      }
-    };
+    return new ObjectRefImpl(kind, id);
   }
 }

api/src/main/java/com/oviva/spicegen/api/PermissionService.java

@@ -12,4 +12,12 @@ public interface PermissionService {
    * @return the result, containing the consistencyToken
    */
   UpdateResult updateRelationships(UpdateRelationships updateRelationships);
+
+  /**
+   * Checks whether a subject has the given permission on a resource
+   *
+   * @param checkPermission the request
+   * @return true it the subject is permitted, false otherwise
+   */
+  boolean checkPermission(CheckPermission checkPermission);
 }

api/src/main/java/com/oviva/spicegen/api/Precondition.java

@@ -1,63 +1,36 @@
 package com.oviva.spicegen.api;
 
-public final class Precondition {
+import com.oviva.spicegen.api.internal.PreconditionImpl;
 
-  private final Condition condition;
-  private final RelationshipFilter filter;
+public interface Precondition {
 
-  private Precondition(Builder builder) {
-    condition = builder.condition;
-    filter = builder.filter;
-  }
+  Condition condition();
 
-  public static Precondition mustMatch(RelationshipFilter filter) {
-    return new Precondition(Condition.MUST_MATCH, filter);
-  }
+  RelationshipFilter filter();
 
-  public static Precondition mustNotMatch(RelationshipFilter filter) {
-    return new Precondition(Condition.MUST_NOT_MATCH, filter);
+  static Precondition mustMatch(RelationshipFilter filter) {
+    return new PreconditionImpl(Condition.MUST_MATCH, filter);
   }
 
-  public static Builder newBuilder() {
-    return new Builder();
+  static Precondition mustNotMatch(RelationshipFilter filter) {
+    return new PreconditionImpl(Condition.MUST_NOT_MATCH, filter);
   }
 
-  private Precondition(Condition condition, RelationshipFilter filter) {
-    this.condition = condition;
-    this.filter = filter;
-  }
-
-  public Condition condition() {
-    return condition;
-  }
-
-  public RelationshipFilter filter() {
-    return filter;
-  }
-
-  public enum Condition {
+  enum Condition {
     MUST_MATCH,
     MUST_NOT_MATCH
   }
 
-  public static final class Builder {
-    private Condition condition;
-    private RelationshipFilter filter;
+  static Builder newBuilder() {
+    return new PreconditionImpl.Builder();
+  }
 
-    private Builder() {}
+  interface Builder {
 
-    public Builder withCondition(Condition val) {
-      condition = val;
-      return this;
-    }
+    Precondition.Builder condition(Condition condition);
 
-    public Builder withFilter(RelationshipFilter val) {
-      filter = val;
-      return this;
-    }
+    Precondition.Builder filter(RelationshipFilter filter);
 
-    public Precondition build() {
-      return new Precondition(this);
-    }
+    Precondition build();
   }
 }

api/src/main/java/com/oviva/spicegen/api/RelationshipFilter.java

@@ -1,137 +1,56 @@
 package com.oviva.spicegen.api;
 
+import com.oviva.spicegen.api.internal.RelationshipFilterImpl;
 import java.util.Optional;
 
-public final class RelationshipFilter {
+public interface RelationshipFilter {
 
-  private final String resourceKind;
-
-  /** optional */
-  private final String resourceId;
-
-  /** optional */
-  private final String relation;
-
-  /** optional */
-  private final SubjectFilter subjectFilter;
-
-  private RelationshipFilter(Builder builder) {
-    resourceKind = builder.resourceKind;
-    resourceId = builder.resourceId;
-    relation = builder.relation;
-    subjectFilter = builder.subjectFilter;
+  static Builder newBuilder() {
+    return new RelationshipFilterImpl.Builder();
   }
 
-  public static Builder newBuilder() {
-    return new Builder();
-  }
-
-  public String resourceKind() {
-    return resourceKind;
-  }
-
-  public Optional<String> resourceId() {
-    return Optional.ofNullable(resourceId);
-  }
-
-  public Optional<String> relation() {
-    return Optional.ofNullable(relation);
-  }
-
-  public Optional<SubjectFilter> subjectFilter() {
-    return Optional.ofNullable(subjectFilter);
-  }
+  String resourceKind();
 
-  public static class SubjectFilter {
+  Optional<String> resourceId();
 
-    private final String subjectKind;
+  Optional<String> relation();
 
-    /** optional */
-    private final String subjectId;
+  Optional<SubjectFilter> subjectFilter();
 
-    /** optional */
-    private final String relation;
+  interface SubjectFilter {
 
-    private SubjectFilter(Builder builder) {
-      subjectKind = builder.subjectKind;
-      subjectId = builder.subjectId;
-      relation = builder.relation;
+    static Builder newBuilder() {
+      return new RelationshipFilterImpl.SubjectFilterImpl.Builder();
     }
 
-    public static Builder newBuilder() {
-      return new Builder();
-    }
-
-    public String subjectKind() {
-      return subjectKind;
-    }
+    String subjectKind();
 
-    public Optional<String> subjectId() {
-      return Optional.ofNullable(subjectId);
-    }
-
-    public Optional<String> relation() {
-      return Optional.ofNullable(relation);
-    }
+    Optional<String> subjectId();
 
-    public static final class Builder {
-      private String subjectKind;
-      private String subjectId;
-      private String relation;
+    Optional<String> relation();
 
-      private Builder() {}
+    interface Builder {
 
-      public Builder withSubjectKind(String val) {
-        subjectKind = val;
-        return this;
-      }
+      Builder subjectKind(String val);
 
-      public Builder withSubjectId(String val) {
-        subjectId = val;
-        return this;
-      }
+      Builder subjectId(String val);
 
-      public Builder withRelation(String val) {
-        relation = val;
-        return this;
-      }
+      Builder relation(String val);
 
-      public SubjectFilter build() {
-        return new SubjectFilter(this);
-      }
+      SubjectFilter build();
     }
   }
 
-  public static final class Builder {
-    private String resourceKind;
-    private String resourceId;
-    private String relation;
-    private SubjectFilter subjectFilter;
+  interface Builder {
 
-    private Builder() {}
+    Builder resourceKind(String val);
 
-    public Builder withResourceKind(String val) {
-      resourceKind = val;
-      return this;
-    }
-
-    public Builder withResourceId(String val) {
-      resourceId = val;
-      return this;
-    }
+    Builder resourceId(String val);
 
-    public Builder withRelation(String val) {
-      relation = val;
-      return this;
-    }
+    Builder relation(String val);
 
-    public Builder withSubjectFilter(SubjectFilter val) {
-      subjectFilter = val;
-      return this;
-    }
+    Builder subjectFilter(SubjectFilter val);
 
-    public RelationshipFilter build() {
-      return new RelationshipFilter(this);
-    }
+    RelationshipFilter build();
   }
 }

api/src/main/java/com/oviva/spicegen/api/SubjectRef.java

@@ -1,21 +1,16 @@
 package com.oviva.spicegen.api;
 
+import com.oviva.spicegen.api.internal.SubjectRefImpl;
+
 public interface SubjectRef {
   String kind();
 
   String id();
 
   static SubjectRef ofObject(ObjectRef o) {
-    return new SubjectRef() {
-      @Override
-      public String kind() {
-        return o.kind();
-      }
-
-      @Override
-      public String id() {
-        return o.id();
-      }
-    };
+    if (o == null) {
+      return null;
+    }
+    return new SubjectRefImpl(o.kind(), o.id());
   }
 }