ENH: Support @Index platforms attribute - platform specific indexes

This is a potential alternative to using extra-dll.xml. Might be
appropriate to use over extra-dll in small simple cases.

We might look to extend this in the future to allow full raw platform specific ddl - the ability to specify the entire create index statement.

src/test/java/io/ebean/config/DbConstraintNamingTest.java

@@ -9,35 +9,30 @@ public class DbConstraintNamingTest {
   DbConstraintNaming naming = new DbConstraintNaming();
 
   @Test
-  public void testPrimaryKeyName() throws Exception {
-
+  public void testPrimaryKeyName() {
     assertThat(naming.primaryKeyName("[cat].[sce].[foo_bar]")).isEqualTo("pk_foo_bar");
   }
 
   @Test
-  public void testUniqueConstraintName() throws Exception {
-
+  public void testUniqueConstraintName() {
     assertThat(naming.uniqueConstraintName("[foo_bar]", "[jim]")).isEqualTo("uq_foo_bar_jim");
   }
 
   @Test
-  public void testCheckConstraintName() throws Exception {
-
+  public void testCheckConstraintName() {
     assertThat(naming.checkConstraintName("[foo_bar]", "[jim]")).isEqualTo("ck_foo_bar_jim");
   }
 
   @Test
-  public void testNormalise() throws Exception {
-
+  public void testNormalise() {
     assertThat(naming.normaliseTable("cat.sch.foo_bar]")).isEqualTo("foo_bar");
     assertThat(naming.normaliseTable("sch.foo_bar]")).isEqualTo("foo_bar");
     assertThat(naming.normaliseTable("foo_bar]")).isEqualTo("foo_bar");
   }
 
   @Test
-  public void testDefaultToLower() throws Exception {
+  public void testDefaultToLower() {
     assertThat(naming.normaliseTable("SCH.FOO_BAR]")).isEqualTo("foo_bar");
-
     assertThat(naming.lowerTableName("SCH.FOO_BAR]")).isEqualTo("SCH.FOO_BAR]");
     assertThat(naming.lowerTableName("SCH.FOO_BAR")).isEqualTo("sch.foo_bar");
     assertThat(naming.lowerColumnName("SCH.FOO_BAR]")).isEqualTo("SCH.FOO_BAR]");
@@ -45,8 +40,7 @@ public class DbConstraintNamingTest {
   }
 
   @Test
-  public void testNoLowerCaseTable() throws Exception {
-
+  public void testNoLowerCaseTable() {
     DbConstraintNaming naming = new DbConstraintNaming(false, true);
     assertThat(naming.normaliseTable("SCH.FOO_BAR]")).isEqualTo("FOO_BAR");
     assertThat(naming.normaliseColumn("SCH.FOO_BAR]")).isEqualTo("sch.foo_bar");
@@ -58,8 +52,7 @@ public class DbConstraintNamingTest {
   }
 
   @Test
-  public void testNoLowerCaseColumn() throws Exception {
-
+  public void testNoLowerCaseColumn() {
     DbConstraintNaming naming = new DbConstraintNaming(true, false);
     assertThat(naming.normaliseTable("SCH.FOO_BAR]")).isEqualTo("foo_bar");
     assertThat(naming.normaliseColumn("SCH.FOO_BAR]")).isEqualTo("SCH.FOO_BAR");
@@ -70,4 +63,8 @@ public class DbConstraintNamingTest {
     assertThat(naming.lowerColumnName("SCH.FOO_BAR")).isEqualTo("SCH.FOO_BAR");
   }
 
+  @Test
+  public void normaliseColumn_withFormula() {
+    assertThat(naming.normaliseColumn("lower(name)")).isEqualTo("lowername");
+  }
 }

src/test/java/io/ebeaninternal/dbmigration/model/ModelContainerTest.java

@@ -40,7 +40,7 @@ public class ModelContainerTest {
     assertThat(fkCol.getReferences()).isNull();
     assertThat(fkCol.getForeignKeyName()).isNull();
 
-    final MIndex index = container.getIndex("ix_ec_table");
+    final MIndex index = container.getIndex(new MIndex("ix_ec_table", "ec_table", "foo"));
     assertThat(index.getTableName()).isEqualTo("ec_table");
     assertThat(index.getColumns()).containsOnly("fk_col");
   }

src/test/java/misc/migration/v1_0/OtoChild.java

@@ -1,9 +1,14 @@
 package misc.migration.v1_0;
 
+import io.ebean.annotation.Index;
+
 import javax.persistence.Entity;
 import javax.persistence.Id;
 import javax.persistence.Table;
 
+import static io.ebean.annotation.Platform.POSTGRES;
+
+@Index(columnNames = "lower(name)", platforms = POSTGRES)
 @Entity
 @Table(name = "migtest_oto_child")
 public class OtoChild {

src/test/java/misc/migration/v1_1/OtoChild.java

@@ -1,10 +1,15 @@
 package misc.migration.v1_1;
 
+import io.ebean.annotation.Index;
+
 import javax.persistence.Entity;
 import javax.persistence.Id;
 import javax.persistence.OneToOne;
 import javax.persistence.Table;
 
+import static io.ebean.annotation.Platform.POSTGRES;
+
+@Index(columnNames = "name", platforms = POSTGRES)
 @Entity
 @Table(name = "migtest_oto_child")
 public class OtoChild {

src/test/java/misc/migration/v1_2/OtoChild.java

@@ -1,9 +1,19 @@
 package misc.migration.v1_2;
 
+import io.ebean.annotation.Index;
+
 import javax.persistence.Entity;
 import javax.persistence.Id;
 import javax.persistence.Table;
 
+import static io.ebean.annotation.Platform.MYSQL;
+import static io.ebean.annotation.Platform.POSTGRES;
+
+@Index(name = "ix_m12_otoc71", columnNames = "foo(name)", platforms = {POSTGRES})
+@Index(name = "ix_m12_otoc72", columnNames = "bar(name)", platforms = {MYSQL})
+@Index(unique = true, name = "uq_m12_otoc71", columnNames = "uqFoo(name)", platforms = {POSTGRES})
+@Index(unique = true, name = "uq_m12_otoc72", columnNames = "uqBar(name)", platforms = {MYSQL})
+@Index(columnNames = "name", platforms = POSTGRES)
 @Entity
 @Table(name = "migtest_oto_child")
 public class OtoChild {

src/test/java/misc/migration/v1_2/OtoMaster.java

@@ -1,9 +1,18 @@
 package misc.migration.v1_2;
 
+import io.ebean.annotation.Index;
+
 import javax.persistence.Entity;
 import javax.persistence.Id;
 import javax.persistence.Table;
 
+import static io.ebean.annotation.Platform.MYSQL;
+import static io.ebean.annotation.Platform.POSTGRES;
+
+@Index(columnNames = "foo(name)", platforms = {POSTGRES})
+@Index(columnNames = "bar(name)", platforms = {MYSQL})
+@Index(unique = true, columnNames = "foo(name)", platforms = {POSTGRES})
+@Index(unique = true, columnNames = "bar(name)", platforms = {MYSQL})
 @Entity
 @Table(name = "migtest_oto_master")
 public class OtoMaster {