springboot 集成SQLite、JPA

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;
    };
}

最后编辑于：2018.08.14 07:50:52

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springboot 集成SQLite、JPA

gradle

或者 maven

application.yml

SQLiteMetadataBuilderInitializer

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