package com.lain.util; /** * 2013-7-25 * chongzhen_zhao * SQLite方言 */ import java.sql.Types; import org.hibernate.dialect.Dialect; import org.hibernate.dialect.function.StandardSQLFunction; import org.hibernate.dialect.function.SQLFunctionTemplate; import org.hibernate.dialect.function.VarArgsSQLFunction; import org.hibernate.type.StandardBasicTypes; import org.hibernate.Hibernate; public class SQLiteDialect extends Dialect { public SQLiteDialect() { super(); registerColumnType(Types.BIT, "integer"); registerColumnType(Types.TINYINT, "tinyint"); registerColumnType(Types.SMALLINT, "smallint"); registerColumnType(Types.INTEGER, "integer"); registerColumnType(Types.BIGINT, "bigint"); registerColumnType(Types.FLOAT, "float"); registerColumnType(Types.REAL, "real"); registerColumnType(Types.DOUBLE, "double"); registerColumnType(Types.NUMERIC, "numeric"); registerColumnType(Types.DECIMAL, "decimal"); registerColumnType(Types.CHAR, "char"); registerColumnType(Types.VARCHAR, "varchar"); registerColumnType(Types.LONGVARCHAR, "longvarchar"); registerColumnType(Types.DATE, "date"); registerColumnType(Types.TIME, "time"); registerColumnType(Types.TIMESTAMP, "timestamp"); registerColumnType(Types.BINARY, "blob"); registerColumnType(Types.VARBINARY, "blob"); registerColumnType(Types.LONGVARBINARY, "blob"); // registerColumnType(Types.NULL, "null"); registerColumnType(Types.BLOB, "blob"); registerColumnType(Types.CLOB, "clob"); registerColumnType(Types.BOOLEAN, "integer"); registerFunction("concat", new VarArgsSQLFunction(StandardBasicTypes.STRING, "", "||", "")); registerFunction("mod", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "?1 % ?2")); registerFunction("substr", new StandardSQLFunction("substr", StandardBasicTypes.STRING)); registerFunction("substring", new StandardSQLFunction("substr", StandardBasicTypes.STRING)); } public boolean supportsIdentityColumns() { return true; } /* public boolean supportsInsertSelectIdentity() { return true; // As specify in NHibernate dialect } */ public boolean hasDataTypeInIdentityColumn() { return false; // As specify in NHibernate dialect } /* public String appendIdentitySelectToInsert(String insertString) { return new StringBuffer(insertString.length()+30). // As specify in NHibernate dialect append(insertString). append("; ").append(getIdentitySelectString()). toString(); } */ public String getIdentityColumnString() { // return "integer primary key autoincrement"; return "integer"; } public String getIdentitySelectString() { return "select last_insert_rowid()"; } public boolean supportsLimit() { return true; } public String getLimitString(String query, boolean hasOffset) { return new StringBuffer(query.length() + 20).append(query).append( hasOffset ? " limit ? offset ?" : " limit ?").toString(); } public boolean supportsTemporaryTables() { return true; } public String getCreateTemporaryTableString() { return "create temporary table if not exists"; } public boolean dropTemporaryTableAfterUse() { return false; } public boolean supportsCurrentTimestampSelection() { return true; } public boolean isCurrentTimestampSelectStringCallable() { return false; } public String getCurrentTimestampSelectString() { return "select current_timestamp"; } public boolean supportsUnionAll() { return true; } public boolean hasAlterTable() { return false; // As specify in NHibernate dialect } public boolean dropConstraints() { return false; } public String getAddColumnString() { return "add column"; } public String getForUpdateString() { return ""; } public boolean supportsOuterJoinForUpdate() { return false; } public String getDropForeignKeyString() { throw new UnsupportedOperationException( "No drop foreign key syntax supported by SQLiteDialect"); } public String getAddForeignKeyConstraintString(String constraintName, String[] foreignKey, String referencedTable, String[] primaryKey, boolean referencesPrimaryKey) { throw new UnsupportedOperationException( "No add foreign key syntax supported by SQLiteDialect"); } public String getAddPrimaryKeyConstraintString(String constraintName) { throw new UnsupportedOperationException( "No add primary key syntax supported by SQLiteDialect"); } public boolean supportsIfExistsBeforeTableName() { return true; } public boolean supportsCascadeDelete() { return false; } /** * 修复分页bug * @author Z.kc */ @Override public boolean bindLimitParametersInReverseOrder() { return true; } }
注意上面代码中的粗体,原因是:
在HIbernate4.0版本中
使用Hibernate.STRING 会报错
原因是
NullableType在新版本中已过时
修改为
StandardBasicTypes.STRING
static StringType STRING
Deprecated. Use StandardBasicTypes.STRING instead.
Deprecated. Use StandardBasicTypes.STRING instead.
import org.hibernate.type.StandardBasicTypes;!!!!