Add dialect-agnostic auto-migration of full text indexes.

src/java/com/samskivert/jdbc/depot/DepotMarshaller.java

@@ -31,6 +31,7 @@ import java.sql.SQLException;
 import java.sql.Statement;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -51,7 +52,6 @@ import com.samskivert.jdbc.depot.annotation.UniqueConstraint;
 
 import com.samskivert.jdbc.DatabaseLiaison;
 import com.samskivert.util.ArrayUtil;
-import com.samskivert.util.StringUtil;
 
 import static com.samskivert.jdbc.depot.Log.log;
 
@@ -746,6 +746,27 @@ public class DepotMarshaller<T extends PersistentRecord>
             });
         }
 
+        // next we create any full text search indexes that exist on the record but not in the
+        // table, first step being to do a dialect-sensitive enumeration of existing indexes
+        Set<String> tableFts = new HashSet<String>(Arrays.asList(
+            builder.getFtsIndexes(metaData.tableColumns, metaData.indexColumns.keySet())));
+
+        // then iterate over what should be there
+        for (final FullTextIndex recordFts : _fullTextIndexes.values()) {
+            if (tableFts.contains(recordFts.name())) {
+                // the table already contains this one
+                continue;
+            }
+
+            // but not this one, so let's create it
+            ctx.invoke(new Modifier() {
+                public int invoke (Connection conn, DatabaseLiaison liaison) throws SQLException {
+                    builder.addFullTextSearch(conn, DepotMarshaller.this, recordFts);
+                    return 0;
+                }
+            });
+        }
+
         // we do not auto-remove columns but rather require that EntityMigration.Drop records be
         // registered by hand to avoid accidentally causing the loss of data
 

src/java/com/samskivert/jdbc/depot/MySQLBuilder.java

@@ -29,6 +29,8 @@ import java.sql.SQLException;
 import java.sql.Statement;
 import java.sql.Time;
 import java.sql.Timestamp;
+import java.util.ArrayList;
+import java.util.List;
 
 import com.samskivert.Log;
 import com.samskivert.jdbc.JDBCUtil;
@@ -134,6 +136,18 @@ public class MySQLBuilder
         super(types);
     }
 
+    @Override
+    public String[] getFtsIndexes (Iterable<String> columns, Iterable<String> indexes)
+    {
+        List<String> result = new ArrayList<String>();
+        for (String index : indexes) {
+            if (index.startsWith("ftsIx_")) {
+                result.add(index.substring("ftsIx_".length()));
+            }
+        }
+        return result.toArray(new String[0]);
+    }
+
     @Override
     public <T extends PersistentRecord> boolean addFullTextSearch (
         Connection conn, DepotMarshaller<T> marshaller, FullTextIndex fts)

src/java/com/samskivert/jdbc/depot/PostgreSQLBuilder.java

@@ -29,6 +29,8 @@ import java.sql.SQLException;
 import java.sql.Statement;
 import java.sql.Time;
 import java.sql.Timestamp;
+import java.util.ArrayList;
+import java.util.List;
 
 import com.samskivert.jdbc.DatabaseLiaison;
 import com.samskivert.jdbc.JDBCUtil;
@@ -108,6 +110,18 @@ public class PostgreSQLBuilder
         super(types);
     }
 
+    @Override
+    public String[] getFtsIndexes (Iterable<String> columns, Iterable<String> indexes)
+    {
+        List<String> result = new ArrayList<String>();
+        for (String column : columns) {
+            if (column.startsWith("ftsCol_")) {
+                result.add(column.substring("ftsCol_".length()));
+            }
+        }
+        return result.toArray(new String[0]);
+    }
+
     @Override
     public <T extends PersistentRecord> boolean addFullTextSearch (
         Connection conn, DepotMarshaller<T> marshaller, FullTextIndex fts)

src/java/com/samskivert/jdbc/depot/SQLBuilder.java

@@ -25,11 +25,11 @@ import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
 
+import com.samskivert.jdbc.depot.DepotMarshaller.TableMetaData;
 import com.samskivert.jdbc.depot.annotation.Column;
 import com.samskivert.jdbc.depot.annotation.FullTextIndex;
 import com.samskivert.jdbc.depot.annotation.GeneratedValue;
 import com.samskivert.jdbc.depot.clause.QueryClause;
-import com.samskivert.jdbc.depot.operator.Conditionals;
 
 /**
  * At the heart of Depot's SQL generation, this object constructs two {@link ExpressionVisitor}
@@ -186,6 +186,13 @@ public abstract class SQLBuilder
      */
     public abstract boolean isPrivateColumn (String column);
 
+    /**
+     * Figure out what full text search indexes already exist on this table and return the names
+     * of those indexes as an array.
+     */
+    public abstract String[] getFtsIndexes (
+        Iterable<String> columns, Iterable<String> indexes);
+
     /**
      * Overridden by subclasses to create a dialect-specific {@link BuildVisitor}.
      */