DBZ-7969 Remove configuration toggle

src/main/java/io/debezium/connector/jdbc/JdbcSinkConnectorConfig.java

@@ -70,7 +70,6 @@ public class JdbcSinkConnectorConfig {
     public static final String FIELD_INCLUDE_LIST = "field.include.list";
     public static final String FIELD_EXCLUDE_LIST = "field.exclude.list";
     public static final String USE_REDUCTION_BUFFER = "use.reduction.buffer";
-    public static final String COLUMN_TYPE_RESOLUTION_MODE = "column.type.resolution.mode";
 
     // todo add support for the ValueConverter contract
 
@@ -320,16 +319,6 @@ public class JdbcSinkConnectorConfig {
             .withDescription(
                     "A reduction buffer consolidates the execution of SQL statements by primary key to reduce the SQL load on the target database. When set to false (the default), each incoming event is applied as a logical SQL change. When set to true, incoming events that refer to the same row will be reduced to a single logical change based on the most recent row state.");
 
-    public static final Field COLUMN_TYPE_RESOLUTION_MODE_FIELD = Field.create(COLUMN_TYPE_RESOLUTION_MODE)
-            .withDisplayName("Specifies how a column's type is resolved")
-            .withEnum(ColumnTypeResolutionMode.class, ColumnTypeResolutionMode.LEGACY)
-            .withGroup(Field.createGroupEntry(Field.Group.CONNECTOR, 2))
-            .withWidth(ConfigDef.Width.SHORT)
-            .withImportance(ConfigDef.Importance.MEDIUM)
-            .withDescription("Controls how the column type is resolved when no length is specified in the event metadata. " +
-                    "legacy: Uses the legacy behavior where non-length character and binary types prefer CLOB, TEXT, LONGTEXT, BLOB types, " +
-                    "improved: Uses an improved behavior to prefer character-based texts like VARCHAR but with the dialect's maximum length instead of CLOB, TEXT, or LONGTEXT types.");
-
     protected static final ConfigDefinition CONFIG_DEFINITION = ConfigDefinition.editor()
             .connector(
                     CONNECTION_URL_FIELD,
@@ -355,8 +344,7 @@ public class JdbcSinkConnectorConfig {
                     SQLSERVER_IDENTITY_INSERT_FIELD,
                     BATCH_SIZE_FIELD,
                     FIELD_INCLUDE_LIST_FIELD,
-                    FIELD_EXCLUDE_LIST_FIELD,
-                    COLUMN_TYPE_RESOLUTION_MODE_FIELD)
+                    FIELD_EXCLUDE_LIST_FIELD)
             .create();
 
     /**
@@ -511,39 +499,6 @@ public String getValue() {
         }
     }
 
-    public enum ColumnTypeResolutionMode implements EnumeratedValue {
-        /**
-         * The legacy column type resolution that is based on Debezium 2.x behavior.
-         */
-        LEGACY("legacy"),
-
-        /**
-         * An improved mode that favors using maximum length character-based data types over the
-         * use of large object types such as CLOB, TEXT, LONGTEXT, etc.
-         */
-        IMPROVED("improved");
-
-        private String mode;
-
-        ColumnTypeResolutionMode(String mode) {
-            this.mode = mode;
-        }
-
-        public static ColumnTypeResolutionMode parse(String value) {
-            for (ColumnTypeResolutionMode option : ColumnTypeResolutionMode.values()) {
-                if (option.getValue().equalsIgnoreCase(value)) {
-                    return option;
-                }
-            }
-            return ColumnTypeResolutionMode.LEGACY;
-        }
-
-        @Override
-        public String getValue() {
-            return mode;
-        }
-    }
-
     private final Configuration config;
 
     private final InsertMode insertMode;
@@ -562,7 +517,6 @@ public String getValue() {
     private final boolean sqlServerIdentityInsert;
     private final long batchSize;
     private final boolean useReductionBuffer;
-    private final ColumnTypeResolutionMode columnTypeResolutionMode;
     private FieldNameFilter fieldsFilter;
 
     public JdbcSinkConnectorConfig(Map<String, String> props) {
@@ -583,7 +537,6 @@ public JdbcSinkConnectorConfig(Map<String, String> props) {
         this.sqlServerIdentityInsert = config.getBoolean(SQLSERVER_IDENTITY_INSERT_FIELD);
         this.batchSize = config.getLong(BATCH_SIZE_FIELD);
         this.useReductionBuffer = config.getBoolean(USE_REDUCTION_BUFFER_FIELD);
-        this.columnTypeResolutionMode = ColumnTypeResolutionMode.parse(config.getString(COLUMN_TYPE_RESOLUTION_MODE_FIELD));
 
         String fieldExcludeList = config.getString(FIELD_EXCLUDE_LIST);
         String fieldIncludeList = config.getString(FIELD_INCLUDE_LIST);
@@ -685,10 +638,6 @@ public String getPostgresPostgisSchema() {
         return postgresPostgisSchema;
     }
 
-    public ColumnTypeResolutionMode getColumnTypeResolutionMode() {
-        return columnTypeResolutionMode;
-    }
-
     /** makes {@link org.hibernate.cfg.Configuration} from connector config
      *
      * @return {@link org.hibernate.cfg.Configuration}

src/main/java/io/debezium/connector/jdbc/dialect/GeneralDatabaseDialect.java

@@ -5,8 +5,6 @@
  */
 package io.debezium.connector.jdbc.dialect;
 
-import static io.debezium.connector.jdbc.JdbcSinkConnectorConfig.ColumnTypeResolutionMode;
-
 import java.sql.Connection;
 import java.sql.DatabaseMetaData;
 import java.sql.ResultSet;
@@ -511,29 +509,15 @@ public String getTypeName(int jdbcType) {
         // for us as we were relying on Hibernate for column type resolution, and now column types
         // are being resolved differently. This code aims to retain the Debezium 2.x resolution
         // functionality.
-        if (ColumnTypeResolutionMode.LEGACY.equals(connectorConfig.getColumnTypeResolutionMode())) {
-            switch (jdbcType) {
-                case Types.VARCHAR:
-                    return getTypeName(Types.LONGVARCHAR);
-                case Types.NVARCHAR:
-                    return getTypeName(Types.LONGNVARCHAR);
-                case Types.VARBINARY:
-                    return getTypeName(Types.LONGVARBINARY);
-                default:
-                    return ddlTypeRegistry.getTypeName(jdbcType, dialect);
-            }
-        }
-        else {
-            switch (jdbcType) {
-                case Types.VARCHAR:
-                    return getTypeName(jdbcType, dialect.getMaxVarcharLength());
-                case Types.NVARCHAR:
-                    return getTypeName(jdbcType, dialect.getMaxNVarcharLength());
-                case Types.VARBINARY:
-                    return getTypeName(jdbcType, dialect.getMaxVarbinaryLength());
-                default:
-                    return ddlTypeRegistry.getTypeName(jdbcType, dialect);
-            }
+        switch (jdbcType) {
+            case Types.VARCHAR:
+                return getTypeName(Types.LONGVARCHAR);
+            case Types.NVARCHAR:
+                return getTypeName(Types.LONGNVARCHAR);
+            case Types.VARBINARY:
+                return getTypeName(Types.LONGVARBINARY);
+            default:
+                return ddlTypeRegistry.getTypeName(jdbcType, dialect);
         }
     }