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📄 ditypeinfo.java

📁 hsqldb是100%java实现的数据库,是一个开放源代码的JAVA数据库 l 具有标准的SQL语法和JAVA接口 l HSQLDB可以自由使用和分发 l 非常简洁和快速的
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            case Types.DATALINK :            case Types.DATE :            case Types.OTHER :            case Types.TIME :            case Types.TIMESTAMP :            case Types.XML :                return "'";    // or JDBC close escape: "'}";            default :                return null;        }    }    /**     * Retrieves a localized representation of the type's name, for human     * consumption only. <p>     *     * @return a localized representation of the type's name     */    String getLocalName() {        if (!locale_set) {            setLocale(Locale.getDefault());        }        String key = this.getTypeName();        return BundleHandler.getString(hnd_local_names, key);    }    /**     * Retrieves the maximum Short.MAX_VALUE bounded scale supported     * for the type. <p>     *     * @return the maximum Short.MAX_VALUE bounded scale supported     *    for the type     */    Integer getMaxScale() {        switch (type) {            case Types.BIGINT :            case Types.DATE :            case Types.TIME :            case Types.INTEGER :            case Types.SMALLINT :            case Types.TINYINT :                return ValuePool.getInt(0);            case Types.TIMESTAMP :                return ValuePool.getInt(6);            case Types.DECIMAL :            case Types.NUMERIC :                return ValuePool.getInt(Short.MAX_VALUE);            case Types.FLOAT :            case Types.REAL :            case Types.DOUBLE :                return ValuePool.getInt(306);            default :                return null;        }    }    /**     * Retrieves the maximum Integer.MAX_VALUE bounded scale supported for     * the type. <p>     *     * @return the maximum Integer.MAX_VALUE bounded scale supported     *    for the type     */    Integer getMaxScaleAct() {        switch (type) {            case Types.DECIMAL :            case Types.NUMERIC :                return ValuePool.getInt(Integer.MAX_VALUE);            default :                return getMaxScale();        }    }    /**     * Retrieves the minumum Short.MIN_VALUE bounded scale supported for     * the type. <p>     *     * @return the minumum Short.MIN_VALUE bounded scale     *    supported for the type     */    Integer getMinScale() {        switch (type) {            case Types.BIGINT :            case Types.DATE :            case Types.INTEGER :            case Types.SMALLINT :            case Types.TIME :            case Types.TIMESTAMP :            case Types.TINYINT :            case Types.DECIMAL :            case Types.NUMERIC :                return ValuePool.getInt(0);            case Types.FLOAT :            case Types.REAL :            case Types.DOUBLE :                return ValuePool.getInt(-324);            default :                return null;        }    }    /**     * Retrieves the minumum Integer.MIN_VALUE bounded scale supported     * for the type. <p>     *     * @return the minumum Integer.MIN_VALUE bounded scale supported     *    for the type     */    Integer getMinScaleAct() {        return getMinScale();    }    /**     * Retrieves the DatabaseMetaData default nullability code for     * the type. <p>     *     * @return the DatabaseMetaData nullability code for the type.     */    Integer getNullability() {        return ValuePool.getInt(columnNullable);    }    /**     * Retrieves the number base which is to be used to interpret the value     * reported by getPrecision(). <p>     *     * @return the number base which is to be used to interpret the     *    value reported by getPrecision()     */    Integer getNumPrecRadix() {        switch (type) {            case Types.BIGINT :            case Types.DECIMAL :            case Types.DOUBLE :            case Types.INTEGER :            case Types.NUMERIC :            case Types.REAL :            case Types.SMALLINT :            case Types.TINYINT :                return ValuePool.getInt(10);            case Types.FLOAT :                return ValuePool.getInt(2);            default :                return null;        }    }    /**     * Retrieves the maximum Integer.MAX_VALUE bounded length or precision for     * the type. <p>     *     * @return the maximum Integer.MAX_VALUE bounded length or     *    precision for the type     */    Integer getPrecision() {        int p = Types.getPrecision(type);        return p == 0 ? null                      : ValuePool.getInt(p);    }    /**     * Retrieves the maximum Long.MAX_VALUE bounded length or precision for     * the type. <p>     *     * @return the maximum Long.MAX_VALUE bounded length or     *    precision for the type     */    Long getPrecisionAct() {        Integer temp = getPrecision();        if (temp == null) {            return ValuePool.getLong(Long.MAX_VALUE);        } else {            return ValuePool.getLong(temp.longValue());        }    }    /**     * Retrieves the localized remarks (if any) on the type. <p>     *     * @return the localized remarks on the type.     */    String getRemarks() {        if (!locale_set) {            setLocale(Locale.getDefault());        }        String key = this.getTypeName();        return BundleHandler.getString(hnd_remarks, key);    }    /**     * Retrieves the DatabaseMetaData searchability code for the type. <p>     *     * @return the DatabaseMetaData searchability code for the type     */    Integer getSearchability() {        return Types.isSearchable(type) ? ValuePool.getInt(typeSearchable)                                        : ValuePool.getInt(typePredNone);    }    /**     * Retrieves the SQL CLI data type code for the type. <p>     *     * @return the SQL CLI data type code for the type     */    Integer getSqlDataType() {        // values from SQL200n SQL CLI spec, or DITypes (which in turn borrows        // first from java.sql.Types and then SQL200n SQL CLI spec) if there        // was no corresponding value in SQL CLI        switch (type) {            case Types.ARRAY :                return ValuePool.getInt(Types.SQL_ARRAY);        // SQL_ARRAY            case Types.BIGINT :                return ValuePool.getInt(Types.SQL_BIGINT);       // SQL_BIGINT            case Types.BINARY :                return ValuePool.getInt(Types.SQL_BLOB);         // fredt- was SQL_BIT_VARYING            case Types.BOOLEAN :                return ValuePool.getInt(Types.SQL_BOOLEAN);      // SQL_BOOLEAN            case Types.BLOB :                return ValuePool.getInt(Types.SQL_BLOB);         // SQL_BLOB            case Types.CHAR :                return ValuePool.getInt(Types.SQL_CHAR);         // SQL_CHAR            case Types.CLOB :                return ValuePool.getInt(Types.SQL_CLOB);         // SQL_CLOB            case Types.DATALINK :                return ValuePool.getInt(Types.SQL_DATALINK);     // SQL_DATALINK            case Types.DATE :                // NO:  This is the _concise_ code, whereas what we want to                //      return here is the Data Type Code column value from                //      Table 38 in the SQL 200n FCD.  This method is used                //      by DatabaseInformationMain to list the sql type                //      column in the SYSTEM_TYPEINFO table, which is specified                //      by JDBC as the sql data type code, not the concise code.                //      That is why there is a sql datetime sub column                //      specified as well.                // return ValuePool.getInt(Types.SQL_DATE);         // fredt - was SQL_DATETIME                return ValuePool.getInt(Types.SQL_DATETIME);            case Types.DECIMAL :                return ValuePool.getInt(Types.SQL_DECIMAL);      // SQL_DECIMAL            case Types.DISTINCT :                return ValuePool.getInt(Types.SQL_UDT);          // SQL_UDT            case Types.DOUBLE :                return ValuePool.getInt(Types.SQL_DOUBLE);       // SQL_DOUBLE            case Types.FLOAT :                return ValuePool.getInt(Types.SQL_FLOAT);        // SQL_FLOAT            case Types.INTEGER :                return ValuePool.getInt(Types.SQL_INTEGER);      // SQL_INTEGER            case Types.JAVA_OBJECT :                return ValuePool.getInt(Types.JAVA_OBJECT);      // N/A - maybe SQL_UDT?            case Types.LONGVARBINARY :                return ValuePool.getInt(Types.SQL_BLOB);         // was SQL_BIT_VARYING            case Types.LONGVARCHAR :                return ValuePool.getInt(Types.SQL_CLOB);         //            case Types.NULL :                return ValuePool.getInt(Types.SQL_ALL_TYPES);    // SQL_ALL_TYPES            case Types.NUMERIC :                return ValuePool.getInt(Types.SQL_NUMERIC);      // SQL_NUMERIC            case Types.OTHER :                return ValuePool.getInt(Types.OTHER);            // N/A - maybe SQL_UDT?            case Types.REAL :                return ValuePool.getInt(Types.SQL_REAL);         // SQL_REAL            case Types.REF :                return ValuePool.getInt(Types.SQL_REF);          // SQL_REF            case Types.SMALLINT :                return ValuePool.getInt(Types.SQL_SMALLINT);     // SQL_SMALLINTEGER            case Types.STRUCT :                return ValuePool.getInt(Types.SQL_UDT);          // SQL_UDT            case Types.TIME :                // NO:  This is the _concise_ code, whereas what we want to                //      return here is the Data Type Code column value from                //      Table 38 in the SQL 200n FCD.  This method is used                //      by DatabaseInformationMain to list the sql type                //      column in the SYSTEM_TYPEINFO table, which is specified                //      by JDBC as the sql data type code, not the concise code.                //      That is why there is a sql datetime sub column                //      specified as well.                // return ValuePool.getInt(Types.SQL_TIME);         // fredt - was SQL_DATETIME                return ValuePool.getInt(Types.SQL_DATETIME);            case Types.TIMESTAMP :                // NO:  This is the _concise_ code, whereas what we want to                //      return here is the Data Type Code column value from                //      Table 38 in the SQL CLI 200n FCD.  This method is used                //      by DatabaseInformationMain to list the sql type                //      column in the SYSTEM_TYPEINFO table, which is specified                //      by JDBC as the sql data type code, not the concise code.                //      That is why there is a sql datetime sub column                //      specified as well.                // return ValuePool.getInt(Types.SQL_TIMESTAMP);    // fredt - was SQL_DATETIME                return ValuePool.getInt(Types.SQL_DATETIME);            case Types.TINYINT :                return ValuePool.getInt(Types.TINYINT);          // N/A            case Types.VARBINARY :                return ValuePool.getInt(Types.SQL_BLOB);         // SQL_BIT_VARYING            case Types.VARCHAR :                return ValuePool.getInt(Types.SQL_VARCHAR);      // SQL_VARCHAR            case Types.XML :                return ValuePool.getInt(Types.SQL_XML);          // SQL_XML            default :                return null;        }    }    /**     * Retrieves the SQL CLI datetime subcode for the type. <p>     *     * @return the SQL CLI datetime subcode for the type     */    Integer getSqlDateTimeSub() {        switch (type) {            case Types.DATE :                return ValuePool.getInt(1);            case Types.TIME :                return ValuePool.getInt(2);            case Types.TIMESTAMP :                return ValuePool.getInt(3);            default :                return null;        }    }    /**     * Retrieve the fully qualified name of the recommended standard Java     * primitive, class or java.sql interface mapping for the type. <p>     *     * @return the fully qualified name of the recommended standard Java     *    primitive, class or java.sql interface mapping for     *    the type     */    String getStdMapClsName() {        switch (type) {

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