Allow use of non-numeric (e.g. UUID) values for ObjectIdentity.getIdentifier()

Prior to this commit, the ObjectIdentity id had to be a number. This
commit allows for domain objects to use UUIDs as their identifier. The
fully qualified class name of the identifier type can be specified
in the acl_object_identity table and a ConversionService can be provided
to BasicLookupStrategy to convert from String to the actual identifier
type.

There are the following other changes:

 - BasicLookupStrategy has a new property, aclClassIdSupported, which
 is used to retrieve the new column from the database. This preserves
 backwards-compatibility, as it is false by default.

 - JdbcMutableAclService has the same property, aclClassIdSupported,
 which is needed to modify the insert statement to write to the
 new column. Defaults to false for backwards-compatibility.

 - Tests have been updated to verify both the existing functionality
 for backwards-compatibility and the new functionality.

Fixes gh-1224

acl/src/main/resources/createAclSchemaMySQL.sql

@@ -21,7 +21,7 @@ CREATE TABLE acl_class (
 CREATE TABLE acl_object_identity (
     id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
     object_id_class BIGINT UNSIGNED NOT NULL,
-    object_id_identity BIGINT NOT NULL,
+    object_id_identity VARCHAR(36) NOT NULL,
     parent_object BIGINT UNSIGNED,
     owner_sid BIGINT UNSIGNED,
     entries_inheriting BOOLEAN NOT NULL,

acl/src/main/resources/createAclSchemaOracle.sql

@@ -43,7 +43,7 @@ END;
 CREATE TABLE acl_object_identity (
     id NUMBER(38) NOT NULL PRIMARY KEY,
     object_id_class NUMBER(38) NOT NULL,
-    object_id_identity NUMBER(38) NOT NULL,
+    object_id_identity NVARCHAR2(36) NOT NULL,
     parent_object NUMBER(38),
     owner_sid NUMBER(38),
     entries_inheriting NUMBER(1) NOT NULL CHECK (entries_inheriting in (0, 1)),

acl/src/main/resources/createAclSchemaPostgres.sql

@@ -15,13 +15,14 @@ create table acl_sid(
 create table acl_class(
     id bigserial not null primary key,
     class varchar(100) not null,
+    class_id_type varchar(100),
     constraint unique_uk_2 unique(class)
 );
 
 create table acl_object_identity(
     id bigserial primary key,
     object_id_class bigint not null,
-    object_id_identity bigint not null,
+    object_id_identity varchar(36) not null,
     parent_object bigint,
     owner_sid bigint,
     entries_inheriting boolean not null,

acl/src/main/resources/createAclSchemaSqlServer.sql

@@ -21,7 +21,7 @@ CREATE TABLE acl_class (
 CREATE TABLE acl_object_identity (
     id BIGINT NOT NULL IDENTITY PRIMARY KEY,
     object_id_class BIGINT NOT NULL,
-    object_id_identity BIGINT NOT NULL,
+    object_id_identity VARCHAR(36) NOT NULL,
     parent_object BIGINT,
     owner_sid BIGINT,
     entries_inheriting BIT NOT NULL,

acl/src/main/resources/createAclSchemaWithAclClassIdType.sql

@@ -0,0 +1,47 @@
+-- ACL schema sql used in HSQLDB
+
+-- drop table acl_entry;
+-- drop table acl_object_identity;
+-- drop table acl_class;
+-- drop table acl_sid;
+
+create table acl_sid(
+    id bigint generated by default as identity(start with 100) not null primary key,
+    principal boolean not null,
+    sid varchar_ignorecase(100) not null,
+    constraint unique_uk_1 unique(sid,principal)
+);
+
+create table acl_class(
+    id bigint generated by default as identity(start with 100) not null primary key,
+    class varchar_ignorecase(100) not null,
+    class_id_type varchar_ignorecase(100),
+    constraint unique_uk_2 unique(class)
+);
+
+create table acl_object_identity(
+    id bigint generated by default as identity(start with 100) not null primary key,
+    object_id_class bigint not null,
+    object_id_identity varchar_ignorecase(36) not null,
+    parent_object bigint,
+    owner_sid bigint,
+    entries_inheriting boolean not null,
+    constraint unique_uk_3 unique(object_id_class,object_id_identity),
+    constraint foreign_fk_1 foreign key(parent_object)references acl_object_identity(id),
+    constraint foreign_fk_2 foreign key(object_id_class)references acl_class(id),
+    constraint foreign_fk_3 foreign key(owner_sid)references acl_sid(id)
+);
+
+create table acl_entry(
+    id bigint generated by default as identity(start with 100) not null primary key,
+    acl_object_identity bigint not null,
+    ace_order int not null,
+    sid bigint not null,
+    mask integer not null,
+    granting boolean not null,
+    audit_success boolean not null,
+    audit_failure boolean not null,
+    constraint unique_uk_4 unique(acl_object_identity,ace_order),
+    constraint foreign_fk_4 foreign key(acl_object_identity) references acl_object_identity(id),
+    constraint foreign_fk_5 foreign key(sid) references acl_sid(id)
+);