change db to sqlite
parent
bd0b2667b9
commit
5c29de08c9
@ -0,0 +1,330 @@
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package com.rehome.mqttclienttemperature.config;
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import org.hibernate.JDBCException;
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import org.hibernate.ScrollMode;
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import org.hibernate.dialect.Dialect;
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import org.hibernate.dialect.function.*;
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import org.hibernate.dialect.identity.IdentityColumnSupport;
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import org.hibernate.dialect.pagination.AbstractLimitHandler;
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import org.hibernate.dialect.pagination.LimitHandler;
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import org.hibernate.dialect.pagination.LimitHelper;
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import org.hibernate.dialect.unique.DefaultUniqueDelegate;
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import org.hibernate.dialect.unique.UniqueDelegate;
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import org.hibernate.engine.spi.RowSelection;
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import org.hibernate.exception.DataException;
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import org.hibernate.exception.JDBCConnectionException;
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import org.hibernate.exception.LockAcquisitionException;
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import org.hibernate.exception.spi.SQLExceptionConversionDelegate;
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import org.hibernate.exception.spi.TemplatedViolatedConstraintNameExtracter;
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import org.hibernate.exception.spi.ViolatedConstraintNameExtracter;
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import org.hibernate.internal.util.JdbcExceptionHelper;
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import org.hibernate.mapping.Column;
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import org.hibernate.type.StandardBasicTypes;
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import java.sql.SQLException;
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import java.sql.Types;
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public class SQLiteDialect extends Dialect {
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private final UniqueDelegate uniqueDelegate;
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public SQLiteDialect() {
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registerColumnType(Types.BIT, "boolean");
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registerColumnType(Types.FLOAT, "float");
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registerColumnType(Types.DOUBLE, "double");
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registerColumnType(Types.DECIMAL, "decimal");
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registerColumnType(Types.CHAR, "char");
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registerColumnType(Types.LONGVARCHAR, "longvarchar");
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registerColumnType(Types.TIMESTAMP, "datetime");
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registerColumnType(Types.BINARY, "blob");
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registerColumnType(Types.VARBINARY, "blob");
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registerColumnType(Types.LONGVARBINARY, "blob");
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registerFunction("concat", new VarArgsSQLFunction(StandardBasicTypes.STRING, "", "||", ""));
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registerFunction("mod", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "?1 % ?2"));
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registerFunction("quote", new StandardSQLFunction("quote", StandardBasicTypes.STRING));
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registerFunction("random", new NoArgSQLFunction("random", StandardBasicTypes.INTEGER));
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registerFunction("round", new StandardSQLFunction("round"));
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registerFunction("substr", new StandardSQLFunction("substr", StandardBasicTypes.STRING));
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registerFunction("trim", new AbstractAnsiTrimEmulationFunction() {
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@Override
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protected SQLFunction resolveBothSpaceTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "trim(?1)");
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}
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@Override
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protected SQLFunction resolveBothSpaceTrimFromFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "trim(?2)");
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}
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@Override
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protected SQLFunction resolveLeadingSpaceTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "ltrim(?1)");
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}
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@Override
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protected SQLFunction resolveTrailingSpaceTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "rtrim(?1)");
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}
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@Override
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protected SQLFunction resolveBothTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "trim(?1, ?2)");
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}
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@Override
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protected SQLFunction resolveLeadingTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "ltrim(?1, ?2)");
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}
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@Override
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protected SQLFunction resolveTrailingTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "rtrim(?1, ?2)");
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}
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});
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uniqueDelegate = new SQLiteUniqueDelegate(this);
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}
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// database type mapping support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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/*@Override
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public String getCastTypeName(int code) {
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// http://sqlite.org/lang_expr.html#castexpr
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return super.getCastTypeName( code );
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}*/
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// IDENTITY support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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private static final SQLiteDialectIdentityColumnSupport IDENTITY_COLUMN_SUPPORT = new
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SQLiteDialectIdentityColumnSupport(new SQLiteDialect());
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@Override
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public IdentityColumnSupport getIdentityColumnSupport() {
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return IDENTITY_COLUMN_SUPPORT;
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}
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// limit/offset support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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private static final AbstractLimitHandler LIMIT_HANDLER = new AbstractLimitHandler() {
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@Override
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public String processSql(String sql, RowSelection selection) {
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final boolean hasOffset = LimitHelper.hasFirstRow(selection);
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return sql + (hasOffset ? " limit ? offset ?" : " limit ?");
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}
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@Override
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public boolean supportsLimit() {
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return true;
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}
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@Override
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public boolean bindLimitParametersInReverseOrder() {
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return true;
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}
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};
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@Override
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public LimitHandler getLimitHandler() {
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return LIMIT_HANDLER;
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}
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// lock acquisition support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@Override
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public boolean supportsLockTimeouts() {
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// may be http://sqlite.org/c3ref/db_mutex.html ?
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return false;
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}
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@Override
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public String getForUpdateString() {
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return "";
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}
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@Override
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public boolean supportsOuterJoinForUpdate() {
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return false;
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}
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// current timestamp support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@Override
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public boolean supportsCurrentTimestampSelection() {
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return true;
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}
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@Override
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public boolean isCurrentTimestampSelectStringCallable() {
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return false;
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}
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@Override
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public String getCurrentTimestampSelectString() {
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return "select current_timestamp";
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}
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// SQLException support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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private static final int SQLITE_BUSY = 5;
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private static final int SQLITE_LOCKED = 6;
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private static final int SQLITE_IOERR = 10;
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private static final int SQLITE_CORRUPT = 11;
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private static final int SQLITE_NOTFOUND = 12;
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private static final int SQLITE_FULL = 13;
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private static final int SQLITE_CANTOPEN = 14;
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private static final int SQLITE_PROTOCOL = 15;
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private static final int SQLITE_TOOBIG = 18;
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private static final int SQLITE_CONSTRAINT = 19;
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private static final int SQLITE_MISMATCH = 20;
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private static final int SQLITE_NOTADB = 26;
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@Override
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public SQLExceptionConversionDelegate buildSQLExceptionConversionDelegate() {
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return new SQLExceptionConversionDelegate() {
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@Override
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public JDBCException convert(SQLException sqlException, String message, String sql) {
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final int errorCode = JdbcExceptionHelper.extractErrorCode(sqlException) & 0xFF;
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if (errorCode == SQLITE_TOOBIG || errorCode == SQLITE_MISMATCH) {
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return new DataException(message, sqlException, sql);
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} else if (errorCode == SQLITE_BUSY || errorCode == SQLITE_LOCKED) {
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return new LockAcquisitionException(message, sqlException, sql);
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} else if ((errorCode >= SQLITE_IOERR && errorCode <= SQLITE_PROTOCOL) || errorCode == SQLITE_NOTADB) {
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return new JDBCConnectionException(message, sqlException, sql);
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}
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// returning null allows other delegates to operate
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return null;
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}
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};
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}
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@Override
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public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter() {
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return EXTRACTER;
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}
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private static final ViolatedConstraintNameExtracter EXTRACTER = new TemplatedViolatedConstraintNameExtracter() {
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@Override
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protected String doExtractConstraintName(SQLException sqle) throws NumberFormatException {
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final int errorCode = JdbcExceptionHelper.extractErrorCode(sqle) & 0xFF;
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if (errorCode == SQLITE_CONSTRAINT) {
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return extractUsingTemplate("constraint ", " failed", sqle.getMessage());
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}
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return null;
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}
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};
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// union subclass support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@Override
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public boolean supportsUnionAll() {
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return true;
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}
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// DDL support ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@Override
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public boolean canCreateSchema() {
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return false;
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}
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@Override
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public boolean hasAlterTable() {
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// As specified in NHibernate dialect
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return false;
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}
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@Override
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public boolean dropConstraints() {
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return false;
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}
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@Override
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public boolean qualifyIndexName() {
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return false;
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}
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@Override
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public String getAddColumnString() {
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return "add column";
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}
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@Override
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public String getDropForeignKeyString() {
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throw new UnsupportedOperationException("No drop foreign key syntax supported by SQLiteDialect");
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}
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@Override
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public String getAddForeignKeyConstraintString(String constraintName,
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String[] foreignKey, String referencedTable, String[] primaryKey,
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boolean referencesPrimaryKey) {
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throw new UnsupportedOperationException("No add foreign key syntax supported by SQLiteDialect");
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}
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@Override
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public String getAddPrimaryKeyConstraintString(String constraintName) {
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throw new UnsupportedOperationException("No add primary key syntax supported by SQLiteDialect");
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}
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@Override
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public boolean supportsCommentOn() {
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return true;
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}
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@Override
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public boolean supportsIfExistsBeforeTableName() {
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return true;
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}
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/* not case insensitive for unicode characters by default (ICU extension needed)
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public boolean supportsCaseInsensitiveLike() {
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return true;
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}
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*/
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@Override
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public boolean doesReadCommittedCauseWritersToBlockReaders() {
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// TODO Validate (WAL mode...)
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return true;
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}
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@Override
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public boolean doesRepeatableReadCauseReadersToBlockWriters() {
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return true;
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}
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@Override
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public boolean supportsTupleDistinctCounts() {
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return false;
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}
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@Override
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public int getInExpressionCountLimit() {
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// Compile/runtime time option: http://sqlite.org/limits.html#max_variable_number
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return 1000;
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}
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@Override
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public UniqueDelegate getUniqueDelegate() {
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return uniqueDelegate;
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}
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private static class SQLiteUniqueDelegate extends DefaultUniqueDelegate {
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public SQLiteUniqueDelegate(Dialect dialect) {
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super(dialect);
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}
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@Override
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public String getColumnDefinitionUniquenessFragment(Column column) {
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return " unique";
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}
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}
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@Override
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public String getSelectGUIDString() {
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return "select hex(randomblob(16))";
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}
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@Override
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public ScrollMode defaultScrollMode() {
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return ScrollMode.FORWARD_ONLY;
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}
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}
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@ -0,0 +1,51 @@
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package com.rehome.mqttclienttemperature.config;
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import org.hibernate.dialect.Dialect;
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import org.hibernate.dialect.identity.IdentityColumnSupportImpl;
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public class SQLiteDialectIdentityColumnSupport extends IdentityColumnSupportImpl {
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public SQLiteDialectIdentityColumnSupport(Dialect dialect) {
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super();
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}
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@Override
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public boolean supportsIdentityColumns() {
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return true;
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}
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/*
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public boolean supportsInsertSelectIdentity() {
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return true; // As specified in NHibernate dialect
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}
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*/
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@Override
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public boolean hasDataTypeInIdentityColumn() {
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// As specified in NHibernate dialect
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// FIXME true
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return false;
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}
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/*
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public String appendIdentitySelectToInsert(String insertString) {
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return new StringBuffer(insertString.length()+30). // As specified in NHibernate dialect
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append(insertString).
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append("; ").append(getIdentitySelectString()).
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toString();
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}
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*/
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@Override
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public String getIdentitySelectString(String table, String column, int type) {
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return "select last_insert_rowid()";
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}
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@Override
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public String getIdentityColumnString(int type) {
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// return "integer primary key autoincrement";
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// FIXME "autoincrement"
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return "integer";
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}
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}
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@ -0,0 +1,41 @@
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package com.rehome.mqttclienttemperature.config;
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import org.hibernate.boot.MetadataBuilder;
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import org.hibernate.boot.registry.StandardServiceRegistry;
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import org.hibernate.boot.spi.MetadataBuilderInitializer;
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import org.hibernate.engine.jdbc.dialect.internal.DialectResolverSet;
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import org.hibernate.engine.jdbc.dialect.spi.DialectResolver;
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import org.jboss.logging.Logger;
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/**
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* SQLite工具
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*/
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public class SQLiteMetadataBuilderInitializer implements MetadataBuilderInitializer {
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private final static Logger logger = Logger.getLogger(SQLiteMetadataBuilderInitializer.class);
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@Override
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public void contribute(MetadataBuilder metadataBuilder, StandardServiceRegistry serviceRegistry) {
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DialectResolver dialectResolver = serviceRegistry.getService(DialectResolver.class);
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if (!(dialectResolver instanceof DialectResolverSet)) {
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logger.warnf("DialectResolver '%s' is not an instance of DialectResolverSet, not registering SQLiteDialect",
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dialectResolver);
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return;
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}
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((DialectResolverSet) dialectResolver).addResolver(resolver);
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}
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static private final SQLiteDialect dialect = new SQLiteDialect();
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static private final DialectResolver resolver = (DialectResolver) info -> {
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if (info.getDatabaseName().equals("SQLite")) {
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return dialect;
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}
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return null;
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};
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}
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