Add some metadata stubs for SQuirreL SQL Client. #1

Author: volker

src/com/inet/excel/ExcelConnection.java

@@ -147,8 +147,7 @@ public void setAutoCommit( boolean autoCommit ) throws SQLException {
      */
     @Override
     public boolean getAutoCommit() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return false;
+        return true;
     }
 
     /**

src/com/inet/excel/ExcelDatabaseMetaData.java

@@ -219,7 +219,7 @@ public boolean nullsAreSortedAtEnd() throws SQLException {
      */
     @Override
     public String getDatabaseProductVersion() throws SQLException {
-        return null;
+        return ExcelDriver.MAJOR_VERSION + "." + ExcelDriver.MINOR_VERSION;
     }
 
     /**
@@ -347,53 +347,47 @@ public String getIdentifierQuoteString() throws SQLException {
      */
     @Override
     public String getSQLKeywords() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        return "";
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public String getNumericFunctions() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        return "";
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public String getStringFunctions() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        return "";
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public String getSystemFunctions() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        return "";
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public String getTimeDateFunctions() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        return "";
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public String getSearchStringEscape() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        return "";
     }
 
     /**
@@ -634,17 +628,15 @@ public String getSchemaTerm() throws SQLException {
      */
     @Override
     public String getProcedureTerm() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        return "sheet";
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public String getCatalogTerm() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        return "file";
     }
 
     /**
@@ -1181,26 +1173,26 @@ public ResultSet getProcedureColumns( String catalog, String schemaPattern, Stri
      */
     @Override
     public ResultSet getSchemas() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        List<String> columnNames = Arrays.asList( "TABLE_SCHEM", "TABLE_CATALOG" );
+        return new ExcelDatabaseResultSet( columnNames, new ArrayList<>() );
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public ResultSet getCatalogs() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        List<String> columnNames = Arrays.asList( "TABLE_CAT" );
+        return new ExcelDatabaseResultSet( columnNames, new ArrayList<>() );
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public ResultSet getTableTypes() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        List<String> columnNames = Arrays.asList( "TABLE_TYPE" );
+        return new ExcelDatabaseResultSet( columnNames, new ArrayList<>() );
     }
 
     /**
@@ -1280,8 +1272,10 @@ public ResultSet getCrossReference( String parentCatalog, String parentSchema, S
      */
     @Override
     public ResultSet getTypeInfo() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        List<String> columnNames = Arrays.asList( "TYPE_NAME", "DATA_TYPE", "PRECISION", "LITERAL_PREFIX", "LITERAL_SUFFIX", "CREATE_PARAMS", "NULLABLE", "CASE_SENSITIVE", "SEARCHABLE", //
+                                                  "UNSIGNED_ATTRIBUTE", "FIXED_PREC_SCALE", "AUTO_INCREMENT", "LOCAL_TYPE_NAME", "MINIMUM_SCALE", "MAXIMUM_SCALE", //
+                                                  "SQL_DATA_TYPE", "SQL_DATETIME_SUB", "NUM_PREC_RADIX" );
+        return new ExcelDatabaseResultSet( columnNames, new ArrayList<>() );
     }
 
     /**
@@ -1394,8 +1388,8 @@ public boolean supportsBatchUpdates() throws SQLException {
      */
     @Override
     public ResultSet getUDTs( String catalog, String schemaPattern, String typeNamePattern, int[] types ) throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        List<String> columnNames = Arrays.asList( "TYPE_CAT", "TYPE_SCHEM", "TYPE_NAME", "CLASS_NAME", "DATA_TYPE", "REMARKS", "BASE_TYPE" );
+        return new ExcelDatabaseResultSet( columnNames, new ArrayList<>() );
     }
 
     /**
@@ -1489,17 +1483,15 @@ public int getResultSetHoldability() throws SQLException {
      */
     @Override
     public int getDatabaseMajorVersion() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return 0;
+        return ExcelDriver.MAJOR_VERSION;
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public int getDatabaseMinorVersion() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return 0;
+        return ExcelDriver.MINOR_VERSION;
     }
 
     /**
@@ -1593,8 +1585,8 @@ public ResultSet getClientInfoProperties() throws SQLException {
      */
     @Override
     public ResultSet getFunctions( String catalog, String schemaPattern, String functionNamePattern ) throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        List<String> columnNames = Arrays.asList( "FUNCTION_CAT", "FUNCTION_SCHEM", "FUNCTION_NAME", "REMARKS", "FUNCTION_TYPE", "SPECIFIC_NAME" );
+        return new ExcelDatabaseResultSet( columnNames, new ArrayList<>() );
     }
 
     /**

src/com/inet/excel/ExcelDatabaseResultSet.java

@@ -17,8 +17,11 @@
 
 import java.sql.ResultSetMetaData;
 import java.sql.SQLException;
+import java.util.Collections;
 import java.util.List;
 
+import com.inet.excel.parser.ValueType;
+
 /** Class for result set used to provide information about available procedures and procedure columns.
  */
 public class ExcelDatabaseResultSet extends ExcelResultSet {
@@ -72,8 +75,9 @@ public void close() throws SQLException {
      */
     @Override
     public ResultSetMetaData getMetaData() throws SQLException {
-        ExcelDriver.throwExceptionAboutUnsupportedOperation();
-        return null;
+        List<String> columnNames = getColumnNames();
+        List<ValueType> columnTypes = Collections.nCopies( columnNames.size(), ValueType.VARCHAR );
+        return new ExcelSheetResultSetMetaData( "", "", columnNames, columnTypes );
     }
 
     /**

src/com/inet/excel/ExcelResultSet.java

@@ -137,7 +137,8 @@ public boolean isWrapperFor( Class<?> iface ) throws SQLException {
      */
     @Override
     public String getString( int columnIndex ) throws SQLException {
-        return getValue( columnIndex  );
+        Object value = getValue( columnIndex  );
+        return value != null ? value.toString() : null;
     }
 
     /**