springboot和sqlite 集成，由于是Hibernate5，不能用现成的com.enigmabridge hibernate4-sqlite-dialect方言包，需要自己配置
gradle
runtime('org.xerial:sqlite-jdbc')
或者 maven
<!-- SQLite3 驱动 -->
<dependency>
<groupId>org.xerial</groupId>
<artifactId>sqlite-jdbc</artifactId>
<version>3.20.0</version>
</dependency>
application.yml
database-platform 是自己写的配置类，hibernate的方言配置
spring:
datasource:
driver-class-name: org.sqlite.JDBC
url: jdbc:sqlite:F:\\db\\sqlite\\db.db
username:
password:
### sqlite需要自己配置连接方式
jpa:
database-platform: info.jesseyang.config.SQLiteDialect #自己配置的方言
hibernate:
ddl-auto: update
show-sql: true
thymeleaf:
cache: false
devtools:
livereload:
enabled: true
SQLiteDialect
package info.jesseyang.config;
import org.hibernate.JDBCException;
import org.hibernate.ScrollMode;
import org.hibernate.dialect.Dialect;
import org.hibernate.dialect.function.*;
import org.hibernate.dialect.identity.IdentityColumnSupport;
import org.hibernate.dialect.pagination.AbstractLimitHandler;
import org.hibernate.dialect.pagination.LimitHandler;
import org.hibernate.dialect.pagination.LimitHelper;
import org.hibernate.dialect.unique.DefaultUniqueDelegate;
import org.hibernate.dialect.unique.UniqueDelegate;
import org.hibernate.engine.spi.RowSelection;
import org.hibernate.exception.DataException;
import org.hibernate.exception.JDBCConnectionException;
import org.hibernate.exception.LockAcquisitionException;
import org.hibernate.exception.spi.SQLExceptionConversionDelegate;
import org.hibernate.exception.spi.TemplatedViolatedConstraintNameExtracter;
import org.hibernate.exception.spi.ViolatedConstraintNameExtracter;
import org.hibernate.internal.util.JdbcExceptionHelper;
import org.hibernate.mapping.Column;
import org.hibernate.type.StandardBasicTypes;
import java.sql.SQLException;
import java.sql.Types;
public class SQLiteDialect extends Dialect {
private final UniqueDelegate uniqueDelegate;
public SQLiteDialect() {
registerColumnType(Types.BIT, "boolean");
//registerColumnType(Types.FLOAT, "float");
//registerColumnType(Types.DOUBLE, "double");
registerColumnType(Types.DECIMAL, "decimal");
registerColumnType(Types.CHAR, "char");
registerColumnType(Types.LONGVARCHAR, "longvarchar");
registerColumnType(Types.TIMESTAMP, "datetime");
registerColumnType(Types.BINARY, "blob");
registerColumnType(Types.VARBINARY, "blob");
registerColumnType(Types.LONGVARBINARY, "blob");
registerFunction("concat", new VarArgsSQLFunction(StandardBasicTypes.STRING, "", "||", ""));
registerFunction("mod", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "?1 % ?2"));
registerFunction("quote", new StandardSQLFunction("quote", StandardBasicTypes.STRING));
registerFunction("random", new NoArgSQLFunction("random", StandardBasicTypes.INTEGER));
registerFunction("round", new StandardSQLFunction("round"));
registerFunction("substr", new StandardSQLFunction("substr", StandardBasicTypes.STRING));
registerFunction("trim", new AbstractAnsiTrimEmulationFunction() {
@Override
protected SQLFunction resolveBothSpaceTrimFunction() {
return new SQLFunctionTemplate(StandardBasicTypes.STRING, "trim(?1)");
}
@Override
protected SQLFunction resolveBothSpaceTrimFromFunction() {
return new SQLFunctionTemplate(StandardBasicTypes.STRING, "trim(?2)");
}
@Override
protected SQLFunction resolveLeadingSpaceTrimFunction() {
return new SQLFunctionTemplate(StandardBasicTypes.STRING, "ltrim(?1)");
}
@Override
protected SQLFunction resolveTrailingSpaceTrimFunction() {
return new SQLFunctionTemplate(StandardBasicTypes.STRING, "rtrim(?1)");
}
@Override
protected SQLFunction resolveBothTrimFunction() {
return new SQLFunctionTemplate(StandardBasicTypes.STRING, "trim(?1, ?2)");
}
@Override
protected SQLFunction resolveLeadingTrimFunction() {
return new SQLFunctionTemplate(StandardBasicTypes.STRING, "ltrim(?1, ?2)");
}
@Override
protected SQLFunction resolveTrailingTrimFunction() {
return new SQLFunctionTemplate(StandardBasicTypes.STRING, "rtrim(?1, ?2)");
}
});
uniqueDelegate = new SQLiteUniqueDelegate(this);
}
// database type mapping support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/*@Override
public String getCastTypeName(int code) {
// http://sqlite.org/lang_expr.html#castexpr
return super.getCastTypeName( code );
}*/
// IDENTITY support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
private static final SQLiteDialectIdentityColumnSupport IDENTITY_COLUMN_SUPPORT = new
SQLiteDialectIdentityColumnSupport(new SQLiteDialect());
@Override
public IdentityColumnSupport getIdentityColumnSupport() {
return IDENTITY_COLUMN_SUPPORT;
}
// limit/offset support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
private static final AbstractLimitHandler LIMIT_HANDLER = new AbstractLimitHandler() {
@Override
public String processSql(String sql, RowSelection selection) {
final boolean hasOffset = LimitHelper.hasFirstRow(selection);
return sql + (hasOffset ? " limit ? offset ?" : " limit ?");
}
@Override
public boolean supportsLimit() {
return true;
}
@Override
public boolean bindLimitParametersInReverseOrder() {
return true;
}
};
@Override
public LimitHandler getLimitHandler() {
return LIMIT_HANDLER;
}
// lock acquisition support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@Override
public boolean supportsLockTimeouts() {
// may be http://sqlite.org/c3ref/db_mutex.html ?
return false;
}
@Override
public String getForUpdateString() {
return "";
}
@Override
public boolean supportsOuterJoinForUpdate() {
return false;
}
// current timestamp support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@Override
public boolean supportsCurrentTimestampSelection() {
return true;
}
@Override
public boolean isCurrentTimestampSelectStringCallable() {
return false;
}
@Override
public String getCurrentTimestampSelectString() {
return "select current_timestamp";
}
// SQLException support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
private static final int SQLITE_BUSY = 5;
private static final int SQLITE_LOCKED = 6;
private static final int SQLITE_IOERR = 10;
private static final int SQLITE_CORRUPT = 11;
private static final int SQLITE_NOTFOUND = 12;
private static final int SQLITE_FULL = 13;
private static final int SQLITE_CANTOPEN = 14;
private static final int SQLITE_PROTOCOL = 15;
private static final int SQLITE_TOOBIG = 18;
private static final int SQLITE_CONSTRAINT = 19;
private static final int SQLITE_MISMATCH = 20;
private static final int SQLITE_NOTADB = 26;
@Override
public SQLExceptionConversionDelegate buildSQLExceptionConversionDelegate() {
return new SQLExceptionConversionDelegate() {
@Override
public JDBCException convert(SQLException sqlException, String message, String sql) {
final int errorCode = JdbcExceptionHelper.extractErrorCode(sqlException) & 0xFF;
if (errorCode == SQLITE_TOOBIG || errorCode == SQLITE_MISMATCH) {
return new DataException(message, sqlException, sql);
} else if (errorCode == SQLITE_BUSY || errorCode == SQLITE_LOCKED) {
return new LockAcquisitionException(message, sqlException, sql);
} else if ((errorCode >= SQLITE_IOERR && errorCode <= SQLITE_PROTOCOL) || errorCode == SQLITE_NOTADB) {
return new JDBCConnectionException(message, sqlException, sql);
}
// returning null allows other delegates to operate
return null;
}
};
}
@Override
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter() {
return EXTRACTER;
}
private static final ViolatedConstraintNameExtracter EXTRACTER = new TemplatedViolatedConstraintNameExtracter() {
@Override
protected String doExtractConstraintName(SQLException sqle) throws NumberFormatException {
final int errorCode = JdbcExceptionHelper.extractErrorCode(sqle) & 0xFF;
if (errorCode == SQLITE_CONSTRAINT) {
return extractUsingTemplate("constraint ", " failed", sqle.getMessage());
}
return null;
}
};
// union subclass support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@Override
public boolean supportsUnionAll() {
return true;
}
// DDL support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@Override
public boolean canCreateSchema() {
return false;
}
@Override
public boolean hasAlterTable() {
// As specified in NHibernate dialect
return false;
}
@Override
public boolean dropConstraints() {
return false;
}
@Override
public boolean qualifyIndexName() {
return false;
}
@Override
public String getAddColumnString() {
return "add column";
}
@Override
public String getDropForeignKeyString() {
throw new UnsupportedOperationException("No drop foreign key syntax supported by SQLiteDialect");
}
@Override
public String getAddForeignKeyConstraintString(String constraintName,
String[] foreignKey, String referencedTable, String[] primaryKey,
boolean referencesPrimaryKey) {
throw new UnsupportedOperationException("No add foreign key syntax supported by SQLiteDialect");
}
@Override
public String getAddPrimaryKeyConstraintString(String constraintName) {
throw new UnsupportedOperationException("No add primary key syntax supported by SQLiteDialect");
}
@Override
public boolean supportsCommentOn() {
return true;
}
@Override
public boolean supportsIfExistsBeforeTableName() {
return true;
}
/* not case insensitive for unicode characters by default (ICU extension needed)
public boolean supportsCaseInsensitiveLike() {
return true;
}
*/
@Override
public boolean doesReadCommittedCauseWritersToBlockReaders() {
// TODO Validate (WAL mode...)
return true;
}
@Override
public boolean doesRepeatableReadCauseReadersToBlockWriters() {
return true;
}
@Override
public boolean supportsTupleDistinctCounts() {
return false;
}
@Override
public int getInExpressionCountLimit() {
// Compile/runtime time option: http://sqlite.org/limits.html#max_variable_number
return 1000;
}
@Override
public UniqueDelegate getUniqueDelegate() {
return uniqueDelegate;
}
private static class SQLiteUniqueDelegate extends DefaultUniqueDelegate {
public SQLiteUniqueDelegate(Dialect dialect) {
super(dialect);
}
@Override
public String getColumnDefinitionUniquenessFragment(Column column) {
return " unique";
}
}
@Override
public String getSelectGUIDString() {
return "select hex(randomblob(16))";
}
@Override
public ScrollMode defaultScrollMode() {
return ScrollMode.FORWARD_ONLY;
}
}
SQLiteDialectIdentityColumnSupport
package info.jesseyang.config;
import org.hibernate.dialect.Dialect;
import org.hibernate.dialect.identity.IdentityColumnSupportImpl;
public class SQLiteDialectIdentityColumnSupport extends IdentityColumnSupportImpl {
public SQLiteDialectIdentityColumnSupport(Dialect dialect) {
super();
}
@Override
public boolean supportsIdentityColumns() {
return true;
}
/*
public boolean supportsInsertSelectIdentity() {
return true; // As specified in NHibernate dialect
}
*/
@Override
public boolean hasDataTypeInIdentityColumn() {
// As specified in NHibernate dialect
// FIXME true
return false;
}
/*
public String appendIdentitySelectToInsert(String insertString) {
return new StringBuffer(insertString.length()+30). // As specified in NHibernate dialect
append(insertString).
append("; ").append(getIdentitySelectString()).
toString();
}
*/
@Override
public String getIdentitySelectString(String table, String column, int type) {
return "select last_insert_rowid()";
}
@Override
public String getIdentityColumnString(int type) {
// return "integer primary key autoincrement";
// FIXME "autoincrement"
return "integer";
}
}
SQLiteMetadataBuilderInitializer
package info.jesseyang.config;
import org.hibernate.boot.MetadataBuilder;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.spi.MetadataBuilderInitializer;
import org.hibernate.engine.jdbc.dialect.internal.DialectResolverSet;
import org.hibernate.engine.jdbc.dialect.spi.DialectResolver;
import org.jboss.logging.Logger;
/**
* SQLite工具
*/
public class SQLiteMetadataBuilderInitializer implements MetadataBuilderInitializer {
private final static Logger logger = Logger.getLogger(SQLiteMetadataBuilderInitializer.class);
@Override
public void contribute(MetadataBuilder metadataBuilder, StandardServiceRegistry serviceRegistry) {
DialectResolver dialectResolver = serviceRegistry.getService(DialectResolver.class);
if (!(dialectResolver instanceof DialectResolverSet)) {
logger.warnf("DialectResolver '%s' is not an instance of DialectResolverSet, not registering SQLiteDialect",
dialectResolver);
return;
}
((DialectResolverSet) dialectResolver).addResolver(resolver);
}
static private final SQLiteDialect dialect = new SQLiteDialect();
static private final DialectResolver resolver = (DialectResolver) info -> {
if (info.getDatabaseName().equals("SQLite")) {
return dialect;
}
return null;
};
}
