jdbcdatabasemetadata.java

来自「一个用java写的开源的数据库系统」· Java 代码 · 共 1,945 行 · 第 1/5 页

JAVA
1,945
字号
     *     * @return <code>true</code> if so; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean supportsANSI92EntryLevelSQL() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return false;    }    /**     * Retrieves whether this database supports the ANSI92 intermediate SQL     * grammar supported. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * up to and including 1.7.1, HSQLDB does not support the ANSI92     * intermediate SQL grammar; this method always returns     * <code>false</code>.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return <code>true</code> if so; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean supportsANSI92IntermediateSQL() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return false;    }    /**     * Retrieves whether this database supports the ANSI92 full SQL     * grammar supported. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * up to and including 1.7.1, HSQLDB does not support the ANSI92     * full SQL grammar; this method always returns     * <code>false</code>.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return <code>true</code> if so; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean supportsANSI92FullSQL() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return false;    }    /**     * Retrieves whether this database supports the SQL Integrity     * Enhancement Facility. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * up to and including 1.7.1, HSQLDB does not support the SQL     * Integrity Enhancement Facility; this method always returns     * <code>false</code>.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return <code>true</code> if so; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean supportsIntegrityEnhancementFacility()    throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return false;    }    /**     * Retrieves whether this database supports some form of outer join. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * HSQLDB supports outer joins; this method always returns     * <code>true</code>.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return <code>true</code> if so; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean supportsOuterJoins() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return true;    }    /**     * Retrieves whether this database supports full nested outer joins. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB  does not support full nested outer     * joins; this method always returns <code>false</code>. <p>     *     * This behaviour may change in a future release.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return <code>true</code> if so; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean supportsFullOuterJoins() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return false;    }    /**     * Retrieves whether this database provides limited support for outer     * joins.  (This will be <code>true</code> if the method     * <code>supportsFullOuterJoins</code> returns <code>true</code>). <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB support the LEFT OUTER join syntax;     * this method always returns <code>true</code>.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return <code>true</code> if so; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean supportsLimitedOuterJoins() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return true;    }    /**     * Retrieves the database vendor's preferred term for "schema". <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB does not support schemas;     * this method always returns the empty String.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return the vendor term for "schema"     * @exception SQLException if a database access error occurs     */    public String getSchemaTerm() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return "";    }    /**     * Retrieves the database vendor's preferred term for "procedure". <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB does not support declaration of     * procedures in SQL; this method always returns the empty String.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return the vendor term for "procedure"     * @exception SQLException if a database access error occurs     */    public String getProcedureTerm() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return "";    }    /**     * Retrieves the database vendor's preferred term for "catalog". <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB does not support catalogs;     * this method always returns the empty String.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return the vendor term for "catalog"     * @exception SQLException if a database access error occurs     */    public String getCatalogTerm() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return "";    }    /**     * Retrieves whether a catalog appears at the start of a fully qualified     * table name.  If not, the catalog appears at the end. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB does not support catalogs;     * this method always returns <code>false</code>.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return <code>true</code> if the catalog name appears at the beginning     *        of a fully qualified table name; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean isCatalogAtStart() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return false;    }    /**     * Retrieves the <code>String</code> that this database uses as the     * separator between a catalog and table name. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB does not support catalogs;     * this method always returns the empty String.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return the separator string     * @exception SQLException if a database access error occurs     */    public String getCatalogSeparator() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return "";    }    /**     * Retrieves whether a schema name can be used in a data     * manipulation statement. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB does not support schemas;     * this method always returns <code>false</code>.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return <code>true</code> if so; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean supportsSchemasInDataManipulation() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return false;    }    /**     * Retrieves whether a schema name can be used in a procedure call     * statement. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB does not support schemas;     * this method always returns <code>false</code>.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return <code>true</code> if so; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean supportsSchemasInProcedureCalls() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return false;    }    /**     * Retrieves whether a schema name can be used in a table     * definition statement. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB does not support schemas;     * this method always returns <code>false</code>.     * </span>     * <!-- end release-specific documentation -->     *     *     * @return <code>true</code> if so; <code>false</code> otherwise     * @exception SQLException if a database access error occurs     */    public boolean supportsSchemasInTableDefinitions() throws SQLException {        if (Trace.TRACE) {            Trace.trace();        }        return false;    }    /**     * Retrieves whether a schema name can be used in an index     * definition statement. <p>     *     * <!-- start release-specific documentation -->     * <span class="ReleaseSpecificDocumentation">     * <b>HSQLDB-Specific Information:</b> <p>     *     * Up to and including 1.7.1, HSQLDB does not support schemas

⌨️ 快捷键说明

复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?