Remove BIT column type registrations from dialects

hibernate-core/src/main/java/org/hibernate/dialect/AbstractHANADialect.java

@@ -767,9 +767,7 @@ public abstract class AbstractHANADialect extends Dialect {
 		registerColumnType( Types.VARCHAR, "clob" );
 		registerColumnType( Types.NVARCHAR, "nclob" );
 
-		registerColumnType( Types.BIT, 1, "boolean" );
+		// map tinyint to smallint since tinyint is unsigned on HANA
-		// map bit/tinyint to smallint since tinyint is unsigned on HANA
-		registerColumnType( Types.BIT, "smallint" );
 		registerColumnType( Types.TINYINT, "smallint" );
 
 		registerHibernateType( Types.NCLOB, StandardBasicTypes.MATERIALIZED_NCLOB.getName() );

hibernate-core/src/main/java/org/hibernate/dialect/AbstractTransactSQLDialect.java

@@ -43,9 +43,6 @@ abstract class AbstractTransactSQLDialect extends Dialect {
 
 		registerColumnType( Types.BOOLEAN, "bit" );
 
-		//SQL Server/Sybase 'bit' type is always exactly one bit
-		registerColumnType( Types.BIT, "smallint" );
-
 		//'tinyint' is an unsigned type in Sybase and
 		//SQL Server, holding values in the range 0-255
 		//see HHH-6779

hibernate-core/src/main/java/org/hibernate/dialect/DB2Dialect.java

@@ -102,7 +102,6 @@ public class DB2Dialect extends Dialect {
 			//prior to DB2 11, the 'boolean' type existed,
 			//but was not allowed as a column type
 			registerColumnType( Types.BOOLEAN, "smallint" );
-			registerColumnType( Types.BIT, 1, "smallint" );
 		}
 
 		registerColumnType( Types.BLOB, "blob($l)" );

hibernate-core/src/main/java/org/hibernate/dialect/DerbyDialect.java

@@ -98,10 +98,6 @@ public class DerbyDialect extends Dialect {
 
 		if ( getVersion() < 1070) {
 			registerColumnType( Types.BOOLEAN, "smallint" ); //no boolean before 10.7
-			registerColumnType( Types.BIT, 1, "smallint" ); //no bit
-		}
-		else {
-			registerColumnType( Types.BIT, 1, "boolean" ); //no bit
 		}
 		registerColumnType( Types.TINYINT, "smallint" ); //no tinyint
 		registerColumnType( Types.CHAR, 254, "char($l)" );

hibernate-core/src/main/java/org/hibernate/dialect/Dialect.java

@@ -157,8 +157,6 @@ public abstract class Dialect implements ConversionContext {
 
 	protected Dialect() {
 
-		registerColumnType( Types.BIT, 1, "bit" );
-		registerColumnType( Types.BIT, "bit($l)" );
 		registerColumnType( Types.BOOLEAN, "boolean" );
 
 		registerColumnType( Types.TINYINT, "tinyint" );

hibernate-core/src/main/java/org/hibernate/dialect/FirebirdDialect.java

@@ -94,9 +94,6 @@ public class FirebirdDialect extends Dialect {
 		super();
 		this.version = version;
 
-		registerColumnType( Types.BIT, 1, "smallint" );
-		registerColumnType( Types.BIT, "smallint" );
-
 		if ( getVersion() < 300 ) {
 			//'boolean' type introduced in 3.0
 			registerColumnType( Types.BOOLEAN, "smallint" );

hibernate-core/src/main/java/org/hibernate/dialect/H2Dialect.java

@@ -91,8 +91,6 @@ public class H2Dialect extends Dialect {
 				? OffsetFetchLimitHandler.INSTANCE
 				: LimitOffsetLimitHandler.INSTANCE;
 
-		//Note: H2 'bit' is a synonym for 'boolean', not a proper bit type
-//		registerColumnType( Types.BIT, "bit" );
 		if ( version < 102139 ) {
 			final int majorVersion = version / 100000;
 			final int minorVersion = version % 100000 / 1000;

hibernate-core/src/main/java/org/hibernate/dialect/InformixDialect.java

@@ -74,10 +74,6 @@ public class InformixDialect extends Dialect {
 		super();
 		this.version = version;
 
-		// Informix doesn't have a bit type
-		registerColumnType( Types.BIT, 1, "boolean" );
-		registerColumnType( Types.BIT, "smallint" );
-
 		registerColumnType( Types.TINYINT, "smallint" );
 		registerColumnType( Types.BIGINT, "int8" );
 

hibernate-core/src/main/java/org/hibernate/dialect/IngresDialect.java

@@ -87,14 +87,11 @@ public class IngresDialect extends Dialect {
 		this.version = version;
 
 		if ( getVersion() < 1000 ) {
-			registerColumnType( Types.BIT, 1, "tinyint" );
 			registerColumnType( Types.BOOLEAN, "tinyint" );
 		}
 		else {
-			registerColumnType( Types.BIT, 1, "boolean" );
 			registerColumnType( Types.BOOLEAN, "boolean" );
 		}
-		registerColumnType( Types.BIT, "tinyint" );
 
 		registerColumnType( Types.NUMERIC, "decimal($p, $s)" ); //Ingres has no 'numeric' type
 

hibernate-core/src/main/java/org/hibernate/dialect/MaxDBDialect.java

@@ -42,7 +42,6 @@ public class MaxDBDialect extends Dialect {
 
 	public MaxDBDialect() {
 		super();
-		registerColumnType( Types.BIT, 1, "boolean" ); //no BIT type
 		registerColumnType( Types.TINYINT, "smallint" );
 
 		registerColumnType( Types.BIGINT, "fixed(19,0)" );

hibernate-core/src/main/java/org/hibernate/dialect/MimerSQLDialect.java

@@ -50,10 +50,7 @@ public class MimerSQLDialect extends Dialect {
 
 	public MimerSQLDialect() {
 		super();
-		//no 'bit' type
-		registerColumnType( Types.BIT, 1, "boolean" );
 		//no 'tinyint', so use integer with 3 decimal digits
-		registerColumnType( Types.BIT, "integer(3)" );
 		registerColumnType( Types.TINYINT, "integer(3)" );
 
 		//Mimer CHARs are ASCII!!

hibernate-core/src/main/java/org/hibernate/dialect/OracleDialect.java

@@ -521,8 +521,6 @@ public class OracleDialect extends Dialect {
 	}
 
 	protected void registerNumericTypeMappings() {
-		registerColumnType( Types.BIT, 1, "number(1,0)" );
-		registerColumnType( Types.BIT, "number(3,0)" );
 		registerColumnType( Types.BOOLEAN, "number(1,0)" );
 
 		registerColumnType( Types.BIGINT, "number(19,0)" );

hibernate-core/src/main/java/org/hibernate/dialect/RDMSOS2200Dialect.java

@@ -83,8 +83,6 @@ public class RDMSOS2200Dialect extends Dialect {
 		 * Note that $l (dollar-L) will use the length value if provided.
 		 * Also new for Hibernate3 is the $p percision and $s (scale) parameters
 		 */
-		registerColumnType( Types.BIT, 1, "smallint" );
-		registerColumnType( Types.BIT, "smallint" );
 		registerColumnType( Types.BOOLEAN, "smallint" );
 		registerColumnType( Types.TINYINT, "smallint" );
 		registerColumnType( Types.BIGINT, "numeric(19,0)" );

hibernate-core/src/main/java/org/hibernate/dialect/SpannerDialect.java

@@ -64,8 +64,6 @@ public class SpannerDialect extends Dialect {
 
 	public SpannerDialect() {
 		registerColumnType( Types.BOOLEAN, "bool" );
-		registerColumnType( Types.BIT, 1, "bool" );
-		registerColumnType( Types.BIT, "int64" );
 
 		registerColumnType( Types.TINYINT, "int64" );
 		registerColumnType( Types.SMALLINT, "int64" );

hibernate-core/src/main/java/org/hibernate/dialect/SybaseASEDialect.java

@@ -54,7 +54,6 @@ public class SybaseASEDialect extends SybaseDialect {
 		//tinyint to store signed bytes, we can use it
 		//to store boolean values)
 		registerColumnType( Types.BOOLEAN, "tinyint" );
-		registerColumnType( Types.BIT, 1, "tinyint" );
 
 
 		if ( getVersion() >= 1500 ) {

hibernate-core/src/main/java/org/hibernate/dialect/TeradataDialect.java

@@ -80,8 +80,6 @@ public class TeradataDialect extends Dialect {
 		this.version = version;
 
 		registerColumnType( Types.BOOLEAN, "byteint" );
-		registerColumnType( Types.BIT, 1, "byteint" );
-		registerColumnType( Types.BIT, "byteint" );
 
 		registerColumnType( Types.TINYINT, "byteint" );
 

hibernate-core/src/main/java/org/hibernate/dialect/TimesTenDialect.java

@@ -61,8 +61,6 @@ public class TimesTenDialect extends Dialect {
 		//Note: these are the correct type mappings
 		//      for the default Oracle type mode
 		//      TypeMode=0
-		registerColumnType( Types.BIT, 1, "tt_tinyint" );
-		registerColumnType( Types.BIT, "tt_tinyint" );
 		registerColumnType( Types.BOOLEAN, "tt_tinyint" );
 
 		registerColumnType(Types.TINYINT, "tt_tinyint");