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Hibernate's community supported dialects
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.community.dialect;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import org.hibernate.LockMode;
import org.hibernate.LockOptions;
import org.hibernate.QueryTimeoutException;
import org.hibernate.boot.model.TypeContributions;
import org.hibernate.dialect.DatabaseVersion;
import org.hibernate.dialect.Dialect;
import org.hibernate.dialect.SybaseDriverKind;
import org.hibernate.dialect.pagination.LimitHandler;
import org.hibernate.dialect.pagination.TopLimitHandler;
import org.hibernate.engine.jdbc.Size;
import org.hibernate.engine.jdbc.dialect.spi.DialectResolutionInfo;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.exception.ConstraintViolationException;
import org.hibernate.exception.LockTimeoutException;
import org.hibernate.exception.spi.SQLExceptionConversionDelegate;
import org.hibernate.exception.spi.TemplatedViolatedConstraintNameExtractor;
import org.hibernate.exception.spi.ViolatedConstraintNameExtractor;
import org.hibernate.internal.util.JdbcExceptionHelper;
import org.hibernate.query.sqm.IntervalType;
import org.hibernate.query.sqm.TemporalUnit;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.sql.ast.SqlAstTranslator;
import org.hibernate.sql.ast.SqlAstTranslatorFactory;
import org.hibernate.sql.ast.spi.StandardSqlAstTranslatorFactory;
import org.hibernate.sql.ast.tree.Statement;
import org.hibernate.sql.exec.spi.JdbcOperation;
import org.hibernate.type.descriptor.java.JavaType;
import org.hibernate.type.descriptor.jdbc.JdbcType;
import org.hibernate.type.descriptor.jdbc.TimestampJdbcType;
import org.hibernate.type.descriptor.jdbc.TinyIntJdbcType;
import org.hibernate.type.descriptor.jdbc.spi.JdbcTypeRegistry;
import org.hibernate.type.descriptor.sql.internal.CapacityDependentDdlType;
import org.hibernate.type.descriptor.sql.spi.DdlTypeRegistry;
import jakarta.persistence.TemporalType;
import static org.hibernate.exception.spi.TemplatedViolatedConstraintNameExtractor.extractUsingTemplate;
import static org.hibernate.type.SqlTypes.BIGINT;
import static org.hibernate.type.SqlTypes.BOOLEAN;
import static org.hibernate.type.SqlTypes.DATE;
import static org.hibernate.type.SqlTypes.TIME;
import static org.hibernate.type.SqlTypes.TIMESTAMP;
import static org.hibernate.type.SqlTypes.TIMESTAMP_WITH_TIMEZONE;
/**
* A {@linkplain Dialect SQL dialect} for Sybase Adaptive Server Enterprise 11.9 and above.
*/
public class SybaseASELegacyDialect extends SybaseLegacyDialect {
private final SizeStrategy sizeStrategy = new SizeStrategyImpl() {
@Override
public Size resolveSize(
JdbcType jdbcType,
JavaType javaType,
Integer precision,
Integer scale,
Long length) {
switch ( jdbcType.getDefaultSqlTypeCode() ) {
case Types.FLOAT:
// Sybase ASE allows FLOAT with a precision up to 48
if ( precision != null ) {
return Size.precision( Math.min( Math.max( precision, 1 ), 48 ) );
}
}
return super.resolveSize( jdbcType, javaType, precision, scale, length );
}
};
private final boolean ansiNull;
public SybaseASELegacyDialect() {
this( DatabaseVersion.make( 11 ) );
}
public SybaseASELegacyDialect(DatabaseVersion version) {
super(version);
ansiNull = false;
}
public SybaseASELegacyDialect(DialectResolutionInfo info) {
super(info);
ansiNull = isAnsiNull( info.getDatabaseMetadata() );
}
@Override
protected String columnType(int sqlTypeCode) {
switch ( sqlTypeCode ) {
case BOOLEAN:
// On Sybase ASE, the 'bit' type cannot be null,
// and cannot have indexes (while we don't use
// tinyint to store signed bytes, we can use it
// to store boolean values)
return "tinyint";
case BIGINT:
// Sybase ASE didn't introduce 'bigint' until version 15.0
return getVersion().isBefore( 15 ) ? "numeric(19,0)" : super.columnType( sqlTypeCode );
case DATE:
return getVersion().isSameOrAfter( 12 ) ? "date" : super.columnType( sqlTypeCode );
case TIME:
return getVersion().isSameOrAfter( 12 ) ? "time" : super.columnType( sqlTypeCode );
default:
return super.columnType( sqlTypeCode );
}
}
@Override
protected void registerColumnTypes(TypeContributions typeContributions, ServiceRegistry serviceRegistry) {
super.registerColumnTypes( typeContributions, serviceRegistry );
final DdlTypeRegistry ddlTypeRegistry = typeContributions.getTypeConfiguration().getDdlTypeRegistry();
// According to Wikipedia bigdatetime and bigtime were added in 15.5
// But with jTDS we can't use them as the driver can't handle the types
if ( getVersion().isSameOrAfter( 15, 5 ) && getDriverKind() != SybaseDriverKind.JTDS ) {
ddlTypeRegistry.addDescriptor(
CapacityDependentDdlType.builder( DATE, "bigdatetime", "bigdatetime", this )
.withTypeCapacity( 3, "datetime" )
.build()
);
ddlTypeRegistry.addDescriptor(
CapacityDependentDdlType.builder( TIME, "bigdatetime", "bigdatetime", this )
.withTypeCapacity( 3, "datetime" )
.build()
);
ddlTypeRegistry.addDescriptor(
CapacityDependentDdlType.builder( TIMESTAMP, "bigdatetime", "bigdatetime", this )
.withTypeCapacity( 3, "datetime" )
.build()
);
ddlTypeRegistry.addDescriptor(
CapacityDependentDdlType.builder( TIMESTAMP_WITH_TIMEZONE, "bigdatetime", "bigdatetime", this )
.withTypeCapacity( 3, "datetime" )
.build()
);
}
}
@Override
public int getMaxVarcharLength() {
// the maximum length of a VARCHAR or VARBINARY
// column depends on the page size and ASE version
// and is actually a limit on the whole row length,
// not the individual column length -- anyway, the
// largest possible page size is 16k, so that's a
// hard upper limit
return 16_384;
}
private static boolean isAnsiNull(DatabaseMetaData databaseMetaData) {
if ( databaseMetaData != null ) {
try (java.sql.Statement s = databaseMetaData.getConnection().createStatement() ) {
final ResultSet rs = s.executeQuery( "SELECT @@options" );
if ( rs.next() ) {
final byte[] optionBytes = rs.getBytes( 1 );
// By trial and error, enabling and disabling ansinull revealed that this bit is the indicator
return ( optionBytes[4] & 2 ) == 2;
}
}
catch (SQLException ex) {
// Ignore
}
}
return false;
}
@Override
public boolean isAnsiNullOn() {
return ansiNull;
}
@Override
public int getFloatPrecision() {
return 15;
}
@Override
public int getDoublePrecision() {
return 48;
}
@Override
public SizeStrategy getSizeStrategy() {
return sizeStrategy;
}
@Override
public SqlAstTranslatorFactory getSqlAstTranslatorFactory() {
return new StandardSqlAstTranslatorFactory() {
@Override
protected SqlAstTranslator buildTranslator(
SessionFactoryImplementor sessionFactory, Statement statement) {
return new SybaseASELegacySqlAstTranslator<>( sessionFactory, statement );
}
};
}
/**
* The Sybase ASE {@code BIT} type does not allow
* null values, so we don't use it.
*
* @return false
*/
@Override
public boolean supportsBitType() {
return false;
}
@Override
public boolean supportsDistinctFromPredicate() {
return getVersion().isSameOrAfter( 16, 3 );
}
@Override
public void contributeTypes(TypeContributions typeContributions, ServiceRegistry serviceRegistry) {
super.contributeTypes( typeContributions, serviceRegistry );
final JdbcTypeRegistry jdbcTypeRegistry = typeContributions.getTypeConfiguration()
.getJdbcTypeRegistry();
jdbcTypeRegistry.addDescriptor( Types.BOOLEAN, TinyIntJdbcType.INSTANCE );
// At least the jTDS driver does not support this type code
if ( getDriverKind() == SybaseDriverKind.JTDS ) {
jdbcTypeRegistry.addDescriptor( Types.TIMESTAMP_WITH_TIMEZONE, TimestampJdbcType.INSTANCE );
}
}
@Override
public String currentDate() {
return "current_date()";
}
@Override
public String currentTime() {
return "current_time()";
}
@Override
public String currentTimestamp() {
return "current_bigdatetime()";
}
@Override
public long getFractionalSecondPrecisionInNanos() {
// Sybase supports microsecond precision
// but when we use it we just get numerical
// overflows from timestamp arithmetic
return 1_000_000;
}
@Override
public String timestampaddPattern(TemporalUnit unit, TemporalType temporalType, IntervalType intervalType) {
switch ( unit ) {
case NANOSECOND:
return "dateadd(ms,?2/1000000,?3)";
// return "dateadd(mcs,?2/1000,?3)";
case NATIVE:
return "dateadd(ms,?2,?3)";
// return "dateadd(mcs,?2,?3)";
default:
return "dateadd(?1,?2,?3)";
}
}
@Override
public String timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType) {
switch ( unit ) {
case NANOSECOND:
return "(cast(datediff(ms,?2,?3) as numeric(21))*1000000)";
// return "(cast(datediff(mcs,?2,?3) as numeric(21))*1000)";
// }
case NATIVE:
return "cast(datediff(ms,?2,?3) as numeric(21))";
// return "cast(datediff(mcs,cast(?2 as bigdatetime),cast(?3 as bigdatetime)) as numeric(21))";
default:
return "datediff(?1,?2,?3)";
}
}
@Override
protected void registerDefaultKeywords() {
super.registerDefaultKeywords();
registerKeyword( "add" );
registerKeyword( "all" );
registerKeyword( "alter" );
registerKeyword( "and" );
registerKeyword( "any" );
registerKeyword( "arith_overflow" );
registerKeyword( "as" );
registerKeyword( "asc" );
registerKeyword( "at" );
registerKeyword( "authorization" );
registerKeyword( "avg" );
registerKeyword( "begin" );
registerKeyword( "between" );
registerKeyword( "break" );
registerKeyword( "browse" );
registerKeyword( "bulk" );
registerKeyword( "by" );
registerKeyword( "cascade" );
registerKeyword( "case" );
registerKeyword( "char_convert" );
registerKeyword( "check" );
registerKeyword( "checkpoint" );
registerKeyword( "close" );
registerKeyword( "clustered" );
registerKeyword( "coalesce" );
registerKeyword( "commit" );
registerKeyword( "compute" );
registerKeyword( "confirm" );
registerKeyword( "connect" );
registerKeyword( "constraint" );
registerKeyword( "continue" );
registerKeyword( "controlrow" );
registerKeyword( "convert" );
registerKeyword( "count" );
registerKeyword( "count_big" );
registerKeyword( "create" );
registerKeyword( "current" );
registerKeyword( "cursor" );
registerKeyword( "database" );
registerKeyword( "dbcc" );
registerKeyword( "deallocate" );
registerKeyword( "declare" );
registerKeyword( "decrypt" );
registerKeyword( "default" );
registerKeyword( "delete" );
registerKeyword( "desc" );
registerKeyword( "determnistic" );
registerKeyword( "disk" );
registerKeyword( "distinct" );
registerKeyword( "drop" );
registerKeyword( "dummy" );
registerKeyword( "dump" );
registerKeyword( "else" );
registerKeyword( "encrypt" );
registerKeyword( "end" );
registerKeyword( "endtran" );
registerKeyword( "errlvl" );
registerKeyword( "errordata" );
registerKeyword( "errorexit" );
registerKeyword( "escape" );
registerKeyword( "except" );
registerKeyword( "exclusive" );
registerKeyword( "exec" );
registerKeyword( "execute" );
registerKeyword( "exist" );
registerKeyword( "exit" );
registerKeyword( "exp_row_size" );
registerKeyword( "external" );
registerKeyword( "fetch" );
registerKeyword( "fillfactor" );
registerKeyword( "for" );
registerKeyword( "foreign" );
registerKeyword( "from" );
registerKeyword( "goto" );
registerKeyword( "grant" );
registerKeyword( "group" );
registerKeyword( "having" );
registerKeyword( "holdlock" );
registerKeyword( "identity" );
registerKeyword( "identity_gap" );
registerKeyword( "identity_start" );
registerKeyword( "if" );
registerKeyword( "in" );
registerKeyword( "index" );
registerKeyword( "inout" );
registerKeyword( "insensitive" );
registerKeyword( "insert" );
registerKeyword( "install" );
registerKeyword( "intersect" );
registerKeyword( "into" );
registerKeyword( "is" );
registerKeyword( "isolation" );
registerKeyword( "jar" );
registerKeyword( "join" );
registerKeyword( "key" );
registerKeyword( "kill" );
registerKeyword( "level" );
registerKeyword( "like" );
registerKeyword( "lineno" );
registerKeyword( "load" );
registerKeyword( "lock" );
registerKeyword( "materialized" );
registerKeyword( "max" );
registerKeyword( "max_rows_per_page" );
registerKeyword( "min" );
registerKeyword( "mirror" );
registerKeyword( "mirrorexit" );
registerKeyword( "modify" );
registerKeyword( "national" );
registerKeyword( "new" );
registerKeyword( "noholdlock" );
registerKeyword( "nonclustered" );
registerKeyword( "nonscrollable" );
registerKeyword( "non_sensitive" );
registerKeyword( "not" );
registerKeyword( "null" );
registerKeyword( "nullif" );
registerKeyword( "numeric_truncation" );
registerKeyword( "of" );
registerKeyword( "off" );
registerKeyword( "offsets" );
registerKeyword( "on" );
registerKeyword( "once" );
registerKeyword( "online" );
registerKeyword( "only" );
registerKeyword( "open" );
registerKeyword( "option" );
registerKeyword( "or" );
registerKeyword( "order" );
registerKeyword( "out" );
registerKeyword( "output" );
registerKeyword( "over" );
registerKeyword( "artition" );
registerKeyword( "perm" );
registerKeyword( "permanent" );
registerKeyword( "plan" );
registerKeyword( "prepare" );
registerKeyword( "primary" );
registerKeyword( "print" );
registerKeyword( "privileges" );
registerKeyword( "proc" );
registerKeyword( "procedure" );
registerKeyword( "processexit" );
registerKeyword( "proxy_table" );
registerKeyword( "public" );
registerKeyword( "quiesce" );
registerKeyword( "raiserror" );
registerKeyword( "read" );
registerKeyword( "readpast" );
registerKeyword( "readtext" );
registerKeyword( "reconfigure" );
registerKeyword( "references" );
registerKeyword( "remove" );
registerKeyword( "reorg" );
registerKeyword( "replace" );
registerKeyword( "replication" );
registerKeyword( "reservepagegap" );
registerKeyword( "return" );
registerKeyword( "returns" );
registerKeyword( "revoke" );
registerKeyword( "role" );
registerKeyword( "rollback" );
registerKeyword( "rowcount" );
registerKeyword( "rows" );
registerKeyword( "rule" );
registerKeyword( "save" );
registerKeyword( "schema" );
registerKeyword( "scroll" );
registerKeyword( "scrollable" );
registerKeyword( "select" );
registerKeyword( "semi_sensitive" );
registerKeyword( "set" );
registerKeyword( "setuser" );
registerKeyword( "shared" );
registerKeyword( "shutdown" );
registerKeyword( "some" );
registerKeyword( "statistics" );
registerKeyword( "stringsize" );
registerKeyword( "stripe" );
registerKeyword( "sum" );
registerKeyword( "syb_identity" );
registerKeyword( "syb_restree" );
registerKeyword( "syb_terminate" );
registerKeyword( "top" );
registerKeyword( "table" );
registerKeyword( "temp" );
registerKeyword( "temporary" );
registerKeyword( "textsize" );
registerKeyword( "to" );
registerKeyword( "tracefile" );
registerKeyword( "tran" );
registerKeyword( "transaction" );
registerKeyword( "trigger" );
registerKeyword( "truncate" );
registerKeyword( "tsequal" );
registerKeyword( "union" );
registerKeyword( "unique" );
registerKeyword( "unpartition" );
registerKeyword( "update" );
registerKeyword( "use" );
registerKeyword( "user" );
registerKeyword( "user_option" );
registerKeyword( "using" );
registerKeyword( "values" );
registerKeyword( "varying" );
registerKeyword( "view" );
registerKeyword( "waitfor" );
registerKeyword( "when" );
registerKeyword( "where" );
registerKeyword( "while" );
registerKeyword( "with" );
registerKeyword( "work" );
registerKeyword( "writetext" );
registerKeyword( "xmlextract" );
registerKeyword( "xmlparse" );
registerKeyword( "xmltest" );
registerKeyword( "xmlvalidate" );
}
// Overridden informational metadata ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@Override
public boolean supportsCascadeDelete() {
return false;
}
@Override
public int getMaxAliasLength() {
return 30;
}
@Override
public int getMaxIdentifierLength() {
return 255;
}
@Override
public boolean supportsLockTimeouts() {
return false;
}
@Override
public boolean supportsOrderByInSubquery() {
return false;
}
@Override
public boolean supportsUnionInSubquery() {
// At least not according to HHH-3637
return false;
}
@Override
public boolean supportsPartitionBy() {
return false;
}
@Override
public String getTableTypeString() {
//HHH-7298 I don't know if this would break something or cause some side affects
//but it is required to use 'select for update'
return getVersion().isBefore( 15, 7 ) ? super.getTableTypeString() : " lock datarows";
}
@Override
public boolean supportsExpectedLobUsagePattern() {
// Earlier Sybase did not support LOB locators at all
return getVersion().isSameOrAfter( 15, 7 );
}
@Override
public boolean supportsLobValueChangePropagation() {
return false;
}
@Override
public boolean supportsSkipLocked() {
// It does support skipping locked rows only for READ locking
return false;
}
@Override
public String appendLockHint(LockOptions mode, String tableName) {
final String lockHint = super.appendLockHint( mode, tableName );
return !mode.getLockMode().greaterThan( LockMode.READ ) && mode.getTimeOut() == LockOptions.SKIP_LOCKED
? lockHint + " readpast"
: lockHint;
}
@Override
public String toQuotedIdentifier(String name) {
if ( name == null || name.isEmpty() ) {
return name;
}
if ( name.charAt( 0 ) == '#' ) {
// Temporary tables must start with a '#' character,
// but Sybase doesn't support quoting of such identifiers,
// so we simply don't apply quoting in this case
return name;
}
return super.toQuotedIdentifier( name );
}
@Override
public ViolatedConstraintNameExtractor getViolatedConstraintNameExtractor() {
return EXTRACTOR;
}
/**
* Constraint-name extractor for Sybase ASE constraint violation exceptions.
* Orginally contributed by Denny Bartelt.
*/
private static final ViolatedConstraintNameExtractor EXTRACTOR =
new TemplatedViolatedConstraintNameExtractor( sqle -> {
final String sqlState = JdbcExceptionHelper.extractSqlState( sqle );
final int errorCode = JdbcExceptionHelper.extractErrorCode( sqle );
if ( sqlState != null ) {
switch ( sqlState ) {
case "S1000":
case "23000":
switch ( errorCode ) {
case 2601:
// UNIQUE VIOLATION
return extractUsingTemplate( "with unique index '", "'", sqle.getMessage() );
case 546:
// Foreign key violation
return extractUsingTemplate( "constraint name = '", "'", sqle.getMessage() );
}
break;
}
}
return null;
} );
@Override
public SQLExceptionConversionDelegate buildSQLExceptionConversionDelegate() {
if ( getVersion().isBefore( 15, 7 ) ) {
return null;
}
return (sqlException, message, sql) -> {
final String sqlState = JdbcExceptionHelper.extractSqlState( sqlException );
final int errorCode = JdbcExceptionHelper.extractErrorCode( sqlException );
if ( sqlState != null ) {
switch ( sqlState ) {
case "HY008":
return new QueryTimeoutException( message, sqlException, sql );
case "JZ0TO":
case "JZ006":
return new LockTimeoutException( message, sqlException, sql );
case "S1000":
case "23000":
switch ( errorCode ) {
case 515:
// Attempt to insert NULL value into column; column does not allow nulls.
return new ConstraintViolationException(
message,
sqlException,
sql,
getViolatedConstraintNameExtractor().extractConstraintName( sqlException )
);
case 546:
// Foreign key violation
return new ConstraintViolationException(
message,
sqlException,
sql,
getViolatedConstraintNameExtractor().extractConstraintName( sqlException )
);
case 2601:
// Unique constraint violation
return new ConstraintViolationException(
message,
sqlException,
sql,
ConstraintViolationException.ConstraintKind.UNIQUE,
getViolatedConstraintNameExtractor().extractConstraintName( sqlException )
);
}
break;
case "ZZZZZ":
if ( 515 == errorCode ) {
// Attempt to insert NULL value into column; column does not allow nulls.
return new ConstraintViolationException(
message,
sqlException,
sql,
getViolatedConstraintNameExtractor().extractConstraintName( sqlException )
);
}
break;
}
}
return null;
};
}
@Override
public LimitHandler getLimitHandler() {
if ( getVersion().isBefore( 12, 5 ) ) {
//support for SELECT TOP was introduced in Sybase ASE 12.5.3
return super.getLimitHandler();
}
return new TopLimitHandler(false);
}
}
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