#2014 - IllegalArgumentException: No rule for io.ebeaninternal.dbmigration.migration.RenameColumn

src/main/java/io/ebeaninternal/dbmigration/model/MColumn.java

@@ -15,7 +15,7 @@ import java.util.Objects;
  */
 public class MColumn {
 
-  private final String name;
+  private String name;
   private String type;
   private String checkConstraint;
   private String checkConstraintName;
@@ -88,7 +88,6 @@ public class MColumn {
    * Return a copy of this column used for creating the associated draft table.
    */
   public MColumn copyForDraft() {
-
     MColumn copy = new MColumn(name, type);
     copy.draftOnly = draftOnly;
     copy.checkConstraint = checkConstraint;
@@ -470,6 +469,14 @@ public class MColumn {
     this.dbMigrationInfos = dbMigrationInfos;
   }
 
+  /**
+   * Rename the column.
+   */
+  public MColumn rename(String newName) {
+    this.name = newName;
+    return this;
+  }
+
   /**
    * Apply changes based on the AlterColumn request.
    */

src/main/java/io/ebeaninternal/dbmigration/model/MTable.java

@@ -11,6 +11,7 @@ import io.ebeaninternal.dbmigration.migration.DropColumn;
 import io.ebeaninternal.dbmigration.migration.DropHistoryTable;
 import io.ebeaninternal.dbmigration.migration.DropTable;
 import io.ebeaninternal.dbmigration.migration.ForeignKey;
+import io.ebeaninternal.dbmigration.migration.RenameColumn;
 import io.ebeaninternal.dbmigration.migration.UniqueConstraint;
 import io.ebeaninternal.server.deploy.BeanDescriptor;
 import io.ebeaninternal.server.deploy.BeanProperty;
@@ -415,6 +416,15 @@ public class MTable {
     }
   }
 
+  public void apply(RenameColumn renameColumn) {
+    checkTableName(renameColumn.getTableName());
+    MColumn column = columns.remove(renameColumn.getOldName());
+    if (column == null) {
+      throw new IllegalStateException("Column [" + renameColumn.getOldName() + "] does not exist for RenameColumn change on table [" + renameColumn.getTableName() + "]?");
+    }
+    addColumn(column.rename(renameColumn.getNewName()));
+  }
+
   public String getName() {
     return name;
   }

src/main/java/io/ebeaninternal/dbmigration/model/ModelContainer.java

@@ -17,6 +17,7 @@ import io.ebeaninternal.dbmigration.migration.DropHistoryTable;
 import io.ebeaninternal.dbmigration.migration.DropIndex;
 import io.ebeaninternal.dbmigration.migration.DropTable;
 import io.ebeaninternal.dbmigration.migration.Migration;
+import io.ebeaninternal.dbmigration.migration.RenameColumn;
 import io.ebeaninternal.dbmigration.migration.Sql;
 
 import java.util.ArrayList;
@@ -163,6 +164,8 @@ public class ModelContainer {
         applyChange((AddColumn) change);
       } else if (change instanceof DropColumn) {
         applyChange((DropColumn) change);
+      } else if (change instanceof RenameColumn) {
+        applyChange((RenameColumn) change);
       } else if (change instanceof CreateIndex) {
         applyChange((CreateIndex) change);
       } else if (change instanceof DropIndex) {
@@ -314,6 +317,14 @@ public class ModelContainer {
     table.apply(dropColumn);
   }
 
+  protected void applyChange(RenameColumn renameColumn) {
+    MTable table = tables.get(renameColumn.getTableName());
+    if (table == null) {
+      throw new IllegalStateException("Table [" + renameColumn.getTableName() + "] does not exist in model?");
+    }
+    table.apply(renameColumn);
+  }
+
   /**
    * Add a table (typically from reading EbeanServer meta data).
    */

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

@@ -154,6 +154,16 @@ public class ModelContainerTest {
     container.applyChange(dropHistoryTable);
   }
 
+  @Test
+  public void apply_renameColumn() {
+    ModelContainer container = new ModelContainer();
+    container.apply(mig("6.0__renameColumn.model.xml"), ver("6.0"));
+    
+    final MTable table = container.getTable("document");
+    assertThat(table.getColumn("title")).isNotNull();
+    assertThat(table.getColumn("short_title")).isNull();
+  }
+
   @Test
   public void getSchemas() {
 

src/test/resources/io/ebeaninternal/dbmigration/model/6.0__renameColumn.model.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<migration xmlns="http://ebean-orm.github.io/xml/ns/dbmigration">
+  <changeSet type="apply">
+
+    <createTable name="document" withHistory="true" pkName="pk_document">
+      <column name="id" type="bigint" primaryKey="true" references="document_draft.id" foreignKeyName="fk_document_id"/>
+      <column name="short_title" type="varchar(255)"/>
+    </createTable>
+
+    <renameColumn tableName="document" oldName="short_title" newName="title" />
+
+  </changeSet>
+</migration>