--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.sql.rowset/share/classes/javax/sql/rowset/RowSetMetaDataImpl.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,1101 @@
+/*
+ * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package javax.sql.rowset;
+
+import java.sql.*;
+import javax.sql.*;
+import java.io.*;
+
+import java.lang.reflect.*;
+
+/**
+ * Provides implementations for the methods that set and get
+ * metadata information about a <code>RowSet</code> object's columns.
+ * A <code>RowSetMetaDataImpl</code> object keeps track of the
+ * number of columns in the rowset and maintains an internal array
+ * of column attributes for each column.
+ * <P>
+ * A <code>RowSet</code> object creates a <code>RowSetMetaDataImpl</code>
+ * object internally in order to set and retrieve information about
+ * its columns.
+ * <P>
+ * NOTE: All metadata in a <code>RowSetMetaDataImpl</code> object
+ * should be considered as unavailable until the <code>RowSet</code> object
+ * that it describes is populated.
+ * Therefore, any <code>RowSetMetaDataImpl</code> method that retrieves information
+ * is defined as having unspecified behavior when it is called
+ * before the <code>RowSet</code> object contains data.
+ *
+ * @since 1.5
+ */
+public class RowSetMetaDataImpl implements RowSetMetaData, Serializable {
+
+ /**
+ * The number of columns in the <code>RowSet</code> object that created
+ * this <code>RowSetMetaDataImpl</code> object.
+ * @serial
+ */
+ private int colCount;
+
+ /**
+ * An array of <code>ColInfo</code> objects used to store information
+ * about each column in the <code>RowSet</code> object for which
+ * this <code>RowSetMetaDataImpl</code> object was created. The first
+ * <code>ColInfo</code> object in this array contains information about
+ * the first column in the <code>RowSet</code> object, the second element
+ * contains information about the second column, and so on.
+ * @serial
+ */
+ private ColInfo[] colInfo;
+
+ /**
+ * Checks to see that the designated column is a valid column number for
+ * the <code>RowSet</code> object for which this <code>RowSetMetaDataImpl</code>
+ * was created. To be valid, a column number must be greater than
+ * <code>0</code> and less than or equal to the number of columns in a row.
+ * @throws SQLException with the message "Invalid column index"
+ * if the given column number is out of the range of valid column
+ * numbers for the <code>RowSet</code> object
+ */
+ private void checkColRange(int col) throws SQLException {
+ if (col <= 0 || col > colCount) {
+ throw new SQLException("Invalid column index :"+col);
+ }
+ }
+
+ /**
+ * Checks to see that the given SQL type is a valid column type and throws an
+ * <code>SQLException</code> object if it is not.
+ * To be valid, a SQL type must be one of the constant values
+ * in the <code><a href="../../sql/Types.html">java.sql.Types</a></code>
+ * class.
+ *
+ * @param SQLType an <code>int</code> defined in the class <code>java.sql.Types</code>
+ * @throws SQLException if the given <code>int</code> is not a constant defined in the
+ * class <code>java.sql.Types</code>
+ */
+ private void checkColType(int SQLType) throws SQLException {
+ try {
+ Class<?> c = java.sql.Types.class;
+ Field[] publicFields = c.getFields();
+ int fieldValue = 0;
+ for (int i = 0; i < publicFields.length; i++) {
+ fieldValue = publicFields[i].getInt(c);
+ if (fieldValue == SQLType) {
+ return;
+ }
+ }
+ } catch (Exception e) {
+ throw new SQLException(e.getMessage());
+ }
+ throw new SQLException("Invalid SQL type for column");
+ }
+
+ /**
+ * Sets to the given number the number of columns in the <code>RowSet</code>
+ * object for which this <code>RowSetMetaDataImpl</code> object was created.
+ *
+ * @param columnCount an <code>int</code> giving the number of columns in the
+ * <code>RowSet</code> object
+ * @throws SQLException if the given number is equal to or less than zero
+ */
+ public void setColumnCount(int columnCount) throws SQLException {
+
+ if (columnCount <= 0) {
+ throw new SQLException("Invalid column count. Cannot be less " +
+ "or equal to zero");
+ }
+
+ colCount = columnCount;
+
+ // If the colCount is Integer.MAX_VALUE,
+ // we do not initialize the colInfo object.
+ // even if we try to initialize the colCount with
+ // colCount = Integer.MAx_VALUE-1, the colInfo
+ // initialization fails throwing an ERROR
+ // OutOfMemory Exception. So we do not initialize
+ // colInfo at Integer.MAX_VALUE. This is to pass TCK.
+
+ if(!(colCount == Integer.MAX_VALUE)) {
+ colInfo = new ColInfo[colCount + 1];
+
+ for (int i=1; i <= colCount; i++) {
+ colInfo[i] = new ColInfo();
+ }
+ }
+
+
+ }
+
+ /**
+ * Sets whether the designated column is automatically
+ * numbered, thus read-only, to the given <code>boolean</code>
+ * value.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns
+ * in the rowset, inclusive
+ * @param property <code>true</code> if the given column is
+ * automatically incremented; <code>false</code>
+ * otherwise
+ * @throws SQLException if a database access error occurs or
+ * the given index is out of bounds
+ */
+ public void setAutoIncrement(int columnIndex, boolean property) throws SQLException {
+ checkColRange(columnIndex);
+ colInfo[columnIndex].autoIncrement = property;
+ }
+
+ /**
+ * Sets whether the name of the designated column is case sensitive to
+ * the given <code>boolean</code>.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns
+ * in the rowset, inclusive
+ * @param property <code>true</code> to indicate that the column
+ * name is case sensitive; <code>false</code> otherwise
+ * @throws SQLException if a database access error occurs or
+ * the given column number is out of bounds
+ */
+ public void setCaseSensitive(int columnIndex, boolean property) throws SQLException {
+ checkColRange(columnIndex);
+ colInfo[columnIndex].caseSensitive = property;
+ }
+
+ /**
+ * Sets whether a value stored in the designated column can be used
+ * in a <code>WHERE</code> clause to the given <code>boolean</code> value.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number
+ * of columns in the rowset, inclusive
+ * @param property <code>true</code> to indicate that a column
+ * value can be used in a <code>WHERE</code> clause;
+ * <code>false</code> otherwise
+ *
+ * @throws SQLException if a database access error occurs or
+ * the given column number is out of bounds
+ */
+ public void setSearchable(int columnIndex, boolean property)
+ throws SQLException {
+ checkColRange(columnIndex);
+ colInfo[columnIndex].searchable = property;
+ }
+
+ /**
+ * Sets whether a value stored in the designated column is a cash
+ * value to the given <code>boolean</code>.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns,
+ * inclusive between <code>1</code> and the number of columns, inclusive
+ * @param property true if the value is a cash value; false otherwise.
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public void setCurrency(int columnIndex, boolean property)
+ throws SQLException {
+ checkColRange(columnIndex);
+ colInfo[columnIndex].currency = property;
+ }
+
+ /**
+ * Sets whether a value stored in the designated column can be set
+ * to <code>NULL</code> to the given constant from the interface
+ * <code>ResultSetMetaData</code>.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param property one of the following <code>ResultSetMetaData</code> constants:
+ * <code>columnNoNulls</code>,
+ * <code>columnNullable</code>, or
+ * <code>columnNullableUnknown</code>
+ *
+ * @throws SQLException if a database access error occurs,
+ * the given column number is out of bounds, or the value supplied
+ * for the <i>property</i> parameter is not one of the following
+ * constants:
+ * <code>ResultSetMetaData.columnNoNulls</code>,
+ * <code>ResultSetMetaData.columnNullable</code>, or
+ * <code>ResultSetMetaData.columnNullableUnknown</code>
+ */
+ public void setNullable(int columnIndex, int property) throws SQLException {
+ if ((property < ResultSetMetaData.columnNoNulls) ||
+ property > ResultSetMetaData.columnNullableUnknown) {
+ throw new SQLException("Invalid nullable constant set. Must be " +
+ "either columnNoNulls, columnNullable or columnNullableUnknown");
+ }
+ checkColRange(columnIndex);
+ colInfo[columnIndex].nullable = property;
+ }
+
+ /**
+ * Sets whether a value stored in the designated column is a signed
+ * number to the given <code>boolean</code>.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param property <code>true</code> to indicate that a column
+ * value is a signed number;
+ * <code>false</code> to indicate that it is not
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public void setSigned(int columnIndex, boolean property) throws SQLException {
+ checkColRange(columnIndex);
+ colInfo[columnIndex].signed = property;
+ }
+
+ /**
+ * Sets the normal maximum number of chars in the designated column
+ * to the given number.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param size the maximum size of the column in chars; must be
+ * <code>0</code> or more
+ * @throws SQLException if a database access error occurs,
+ * the given column number is out of bounds, or <i>size</i> is
+ * less than <code>0</code>
+ */
+ public void setColumnDisplaySize(int columnIndex, int size) throws SQLException {
+ if (size < 0) {
+ throw new SQLException("Invalid column display size. Cannot be less " +
+ "than zero");
+ }
+ checkColRange(columnIndex);
+ colInfo[columnIndex].columnDisplaySize = size;
+ }
+
+ /**
+ * Sets the suggested column label for use in printouts and
+ * displays, if any, to <i>label</i>. If <i>label</i> is
+ * <code>null</code>, the column label is set to an empty string
+ * ("").
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param label the column label to be used in printouts and displays; if the
+ * column label is <code>null</code>, an empty <code>String</code> is
+ * set
+ * @throws SQLException if a database access error occurs
+ * or the given column index is out of bounds
+ */
+ public void setColumnLabel(int columnIndex, String label) throws SQLException {
+ checkColRange(columnIndex);
+ if (label != null) {
+ colInfo[columnIndex].columnLabel = label;
+ } else {
+ colInfo[columnIndex].columnLabel = "";
+ }
+ }
+
+ /**
+ * Sets the column name of the designated column to the given name.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param columnName a <code>String</code> object indicating the column name;
+ * if the given name is <code>null</code>, an empty <code>String</code>
+ * is set
+ * @throws SQLException if a database access error occurs or the given column
+ * index is out of bounds
+ */
+ public void setColumnName(int columnIndex, String columnName) throws SQLException {
+ checkColRange(columnIndex);
+ if (columnName != null) {
+ colInfo[columnIndex].columnName = columnName;
+ } else {
+ colInfo[columnIndex].columnName = "";
+ }
+ }
+
+ /**
+ * Sets the designated column's table's schema name, if any, to
+ * <i>schemaName</i>. If <i>schemaName</i> is <code>null</code>,
+ * the schema name is set to an empty string ("").
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param schemaName the schema name for the table from which a value in the
+ * designated column was derived; may be an empty <code>String</code>
+ * or <code>null</code>
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public void setSchemaName(int columnIndex, String schemaName) throws SQLException {
+ checkColRange(columnIndex);
+ if (schemaName != null ) {
+ colInfo[columnIndex].schemaName = schemaName;
+ } else {
+ colInfo[columnIndex].schemaName = "";
+ }
+ }
+
+ /**
+ * Sets the total number of decimal digits in a value stored in the
+ * designated column to the given number.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param precision the total number of decimal digits; must be <code>0</code>
+ * or more
+ * @throws SQLException if a database access error occurs,
+ * <i>columnIndex</i> is out of bounds, or <i>precision</i>
+ * is less than <code>0</code>
+ */
+ public void setPrecision(int columnIndex, int precision) throws SQLException {
+
+ if (precision < 0) {
+ throw new SQLException("Invalid precision value. Cannot be less " +
+ "than zero");
+ }
+ checkColRange(columnIndex);
+ colInfo[columnIndex].colPrecision = precision;
+ }
+
+ /**
+ * Sets the number of digits to the right of the decimal point in a value
+ * stored in the designated column to the given number.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param scale the number of digits to the right of the decimal point; must be
+ * zero or greater
+ * @throws SQLException if a database access error occurs,
+ * <i>columnIndex</i> is out of bounds, or <i>scale</i>
+ * is less than <code>0</code>
+ */
+ public void setScale(int columnIndex, int scale) throws SQLException {
+ if (scale < 0) {
+ throw new SQLException("Invalid scale size. Cannot be less " +
+ "than zero");
+ }
+ checkColRange(columnIndex);
+ colInfo[columnIndex].colScale = scale;
+ }
+
+ /**
+ * Sets the name of the table from which the designated column
+ * was derived to the given table name.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param tableName the column's table name; may be <code>null</code> or an
+ * empty string
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public void setTableName(int columnIndex, String tableName) throws SQLException {
+ checkColRange(columnIndex);
+ if (tableName != null) {
+ colInfo[columnIndex].tableName = tableName;
+ } else {
+ colInfo[columnIndex].tableName = "";
+ }
+ }
+
+ /**
+ * Sets the catalog name of the table from which the designated
+ * column was derived to <i>catalogName</i>. If <i>catalogName</i>
+ * is <code>null</code>, the catalog name is set to an empty string.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param catalogName the column's table's catalog name; if the catalogName
+ * is <code>null</code>, an empty <code>String</code> is set
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public void setCatalogName(int columnIndex, String catalogName) throws SQLException {
+ checkColRange(columnIndex);
+ if (catalogName != null)
+ colInfo[columnIndex].catName = catalogName;
+ else
+ colInfo[columnIndex].catName = "";
+ }
+
+ /**
+ * Sets the SQL type code for values stored in the designated column
+ * to the given type code from the class <code>java.sql.Types</code>.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param SQLType the designated column's SQL type, which must be one of the
+ * constants in the class <code>java.sql.Types</code>
+ * @throws SQLException if a database access error occurs,
+ * the given column number is out of bounds, or the column type
+ * specified is not one of the constants in
+ * <code>java.sql.Types</code>
+ * @see java.sql.Types
+ */
+ public void setColumnType(int columnIndex, int SQLType) throws SQLException {
+ // examine java.sql.Type reflectively, loop on the fields and check
+ // this. Separate out into a private method
+ checkColType(SQLType);
+ checkColRange(columnIndex);
+ colInfo[columnIndex].colType = SQLType;
+ }
+
+ /**
+ * Sets the type name used by the data source for values stored in the
+ * designated column to the given type name.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @param typeName the data source-specific type name; if <i>typeName</i> is
+ * <code>null</code>, an empty <code>String</code> is set
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public void setColumnTypeName(int columnIndex, String typeName)
+ throws SQLException {
+ checkColRange(columnIndex);
+ if (typeName != null) {
+ colInfo[columnIndex].colTypeName = typeName;
+ } else {
+ colInfo[columnIndex].colTypeName = "";
+ }
+ }
+
+ /**
+ * Retrieves the number of columns in the <code>RowSet</code> object
+ * for which this <code>RowSetMetaDataImpl</code> object was created.
+ *
+ * @return the number of columns
+ * @throws SQLException if an error occurs determining the column count
+ */
+ public int getColumnCount() throws SQLException {
+ return colCount;
+ }
+
+ /**
+ * Retrieves whether a value stored in the designated column is
+ * automatically numbered, and thus readonly.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return <code>true</code> if the column is automatically numbered;
+ * <code>false</code> otherwise
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public boolean isAutoIncrement(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].autoIncrement;
+ }
+
+ /**
+ * Indicates whether the case of the designated column's name
+ * matters.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return <code>true</code> if the column name is case sensitive;
+ * <code>false</code> otherwise
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public boolean isCaseSensitive(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].caseSensitive;
+ }
+
+ /**
+ * Indicates whether a value stored in the designated column
+ * can be used in a <code>WHERE</code> clause.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return <code>true</code> if a value in the designated column can be used in a
+ * <code>WHERE</code> clause; <code>false</code> otherwise
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public boolean isSearchable(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].searchable;
+ }
+
+ /**
+ * Indicates whether a value stored in the designated column
+ * is a cash value.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return <code>true</code> if a value in the designated column is a cash value;
+ * <code>false</code> otherwise
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public boolean isCurrency(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].currency;
+ }
+
+ /**
+ * Retrieves a constant indicating whether it is possible
+ * to store a <code>NULL</code> value in the designated column.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return a constant from the <code>ResultSetMetaData</code> interface;
+ * either <code>columnNoNulls</code>,
+ * <code>columnNullable</code>, or
+ * <code>columnNullableUnknown</code>
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public int isNullable(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].nullable;
+ }
+
+ /**
+ * Indicates whether a value stored in the designated column is
+ * a signed number.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return <code>true</code> if a value in the designated column is a signed
+ * number; <code>false</code> otherwise
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public boolean isSigned(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].signed;
+ }
+
+ /**
+ * Retrieves the normal maximum width in chars of the designated column.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return the maximum number of chars that can be displayed in the designated
+ * column
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public int getColumnDisplaySize(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].columnDisplaySize;
+ }
+
+ /**
+ * Retrieves the suggested column title for the designated
+ * column for use in printouts and displays.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return the suggested column name to use in printouts and displays
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public String getColumnLabel(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].columnLabel;
+ }
+
+ /**
+ * Retrieves the name of the designated column.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return the column name of the designated column
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public String getColumnName(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].columnName;
+ }
+
+ /**
+ * Retrieves the schema name of the table from which the value
+ * in the designated column was derived.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns,
+ * inclusive
+ * @return the schema name or an empty <code>String</code> if no schema
+ * name is available
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public String getSchemaName(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ String str ="";
+ if(colInfo[columnIndex].schemaName == null){
+ } else {
+ str = colInfo[columnIndex].schemaName;
+ }
+ return str;
+ }
+
+ /**
+ * Retrieves the total number of digits for values stored in
+ * the designated column.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return the precision for values stored in the designated column
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public int getPrecision(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].colPrecision;
+ }
+
+ /**
+ * Retrieves the number of digits to the right of the decimal point
+ * for values stored in the designated column.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return the scale for values stored in the designated column
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public int getScale(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].colScale;
+ }
+
+ /**
+ * Retrieves the name of the table from which the value
+ * in the designated column was derived.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return the table name or an empty <code>String</code> if no table name
+ * is available
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public String getTableName(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].tableName;
+ }
+
+ /**
+ * Retrieves the catalog name of the table from which the value
+ * in the designated column was derived.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return the catalog name of the column's table or an empty
+ * <code>String</code> if no catalog name is available
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public String getCatalogName(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ String str ="";
+ if(colInfo[columnIndex].catName == null){
+ } else {
+ str = colInfo[columnIndex].catName;
+ }
+ return str;
+ }
+
+ /**
+ * Retrieves the type code (one of the <code>java.sql.Types</code>
+ * constants) for the SQL type of the value stored in the
+ * designated column.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return an <code>int</code> representing the SQL type of values
+ * stored in the designated column
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ * @see java.sql.Types
+ */
+ public int getColumnType(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].colType;
+ }
+
+ /**
+ * Retrieves the DBMS-specific type name for values stored in the
+ * designated column.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return the type name used by the data source
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public String getColumnTypeName(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].colTypeName;
+ }
+
+
+ /**
+ * Indicates whether the designated column is definitely
+ * not writable, thus readonly.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return <code>true</code> if this <code>RowSet</code> object is read-Only
+ * and thus not updatable; <code>false</code> otherwise
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public boolean isReadOnly(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].readOnly;
+ }
+
+ /**
+ * Indicates whether it is possible for a write operation on
+ * the designated column to succeed. A return value of
+ * <code>true</code> means that a write operation may or may
+ * not succeed.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return <code>true</code> if a write operation on the designated column may
+ * will succeed; <code>false</code> otherwise
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public boolean isWritable(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return colInfo[columnIndex].writable;
+ }
+
+ /**
+ * Indicates whether a write operation on the designated column
+ * will definitely succeed.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return <code>true</code> if a write operation on the designated column will
+ * definitely succeed; <code>false</code> otherwise
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public boolean isDefinitelyWritable(int columnIndex) throws SQLException {
+ checkColRange(columnIndex);
+ return true;
+ }
+
+ /**
+ * Retrieves the fully-qualified name of the class in the Java
+ * programming language to which a value in the designated column
+ * will be mapped. For example, if the value is an <code>int</code>,
+ * the class name returned by this method will be
+ * <code>java.lang.Integer</code>.
+ * <P>
+ * If the value in the designated column has a custom mapping,
+ * this method returns the name of the class that implements
+ * <code>SQLData</code>. When the method <code>ResultSet.getObject</code>
+ * is called to retrieve a value from the designated column, it will
+ * create an instance of this class or one of its subclasses.
+ *
+ * @param columnIndex the first column is 1, the second is 2, and so on;
+ * must be between <code>1</code> and the number of columns, inclusive
+ * @return the fully-qualified name of the class in the Java programming
+ * language that would be used by the method <code>RowSet.getObject</code> to
+ * retrieve the value in the specified column. This is the class
+ * name used for custom mapping when there is a custom mapping.
+ * @throws SQLException if a database access error occurs
+ * or the given column number is out of bounds
+ */
+ public String getColumnClassName(int columnIndex) throws SQLException {
+ String className = String.class.getName();
+
+ int sqlType = getColumnType(columnIndex);
+
+ switch (sqlType) {
+
+ case Types.NUMERIC:
+ case Types.DECIMAL:
+ className = java.math.BigDecimal.class.getName();
+ break;
+
+ case Types.BIT:
+ className = java.lang.Boolean.class.getName();
+ break;
+
+ case Types.TINYINT:
+ className = java.lang.Byte.class.getName();
+ break;
+
+ case Types.SMALLINT:
+ className = java.lang.Short.class.getName();
+ break;
+
+ case Types.INTEGER:
+ className = java.lang.Integer.class.getName();
+ break;
+
+ case Types.BIGINT:
+ className = java.lang.Long.class.getName();
+ break;
+
+ case Types.REAL:
+ className = java.lang.Float.class.getName();
+ break;
+
+ case Types.FLOAT:
+ case Types.DOUBLE:
+ className = java.lang.Double.class.getName();
+ break;
+
+ case Types.BINARY:
+ case Types.VARBINARY:
+ case Types.LONGVARBINARY:
+ className = "byte[]";
+ break;
+
+ case Types.DATE:
+ className = java.sql.Date.class.getName();
+ break;
+
+ case Types.TIME:
+ className = java.sql.Time.class.getName();
+ break;
+
+ case Types.TIMESTAMP:
+ className = java.sql.Timestamp.class.getName();
+ break;
+
+ case Types.BLOB:
+ className = java.sql.Blob.class.getName();
+ break;
+
+ case Types.CLOB:
+ className = java.sql.Clob.class.getName();
+ break;
+ }
+
+ return className;
+ }
+
+ /**
+ * Returns an object that implements the given interface to allow access to non-standard methods,
+ * or standard methods not exposed by the proxy.
+ * The result may be either the object found to implement the interface or a proxy for that object.
+ * If the receiver implements the interface then that is the object. If the receiver is a wrapper
+ * and the wrapped object implements the interface then that is the object. Otherwise the object is
+ * the result of calling <code>unwrap</code> recursively on the wrapped object. If the receiver is not a
+ * wrapper and does not implement the interface, then an <code>SQLException</code> is thrown.
+ *
+ * @param iface A Class defining an interface that the result must implement.
+ * @return an object that implements the interface. May be a proxy for the actual implementing object.
+ * @throws java.sql.SQLException If no object found that implements the interface
+ * @since 1.6
+ */
+ public <T> T unwrap(java.lang.Class<T> iface) throws java.sql.SQLException {
+
+ if(isWrapperFor(iface)) {
+ return iface.cast(this);
+ } else {
+ throw new SQLException("unwrap failed for:"+ iface);
+ }
+ }
+
+ /**
+ * Returns true if this either implements the interface argument or is directly or indirectly a wrapper
+ * for an object that does. Returns false otherwise. If this implements the interface then return true,
+ * else if this is a wrapper then return the result of recursively calling <code>isWrapperFor</code> on the wrapped
+ * object. If this does not implement the interface and is not a wrapper, return false.
+ * This method should be implemented as a low-cost operation compared to <code>unwrap</code> so that
+ * callers can use this method to avoid expensive <code>unwrap</code> calls that may fail. If this method
+ * returns true then calling <code>unwrap</code> with the same argument should succeed.
+ *
+ * @param interfaces a Class defining an interface.
+ * @return true if this implements the interface or directly or indirectly wraps an object that does.
+ * @throws java.sql.SQLException if an error occurs while determining whether this is a wrapper
+ * for an object with the given interface.
+ * @since 1.6
+ */
+ public boolean isWrapperFor(Class<?> interfaces) throws SQLException {
+ return interfaces.isInstance(this);
+ }
+
+ static final long serialVersionUID = 6893806403181801867L;
+
+ private class ColInfo implements Serializable {
+ /**
+ * The field that indicates whether the value in this column is a number
+ * that is incremented automatically, which makes the value read-only.
+ * <code>true</code> means that the value in this column
+ * is automatically numbered; <code>false</code> means that it is not.
+ *
+ * @serial
+ */
+ public boolean autoIncrement;
+
+ /**
+ * The field that indicates whether the value in this column is case sensitive.
+ * <code>true</code> means that it is; <code>false</code> that it is not.
+ *
+ * @serial
+ */
+ public boolean caseSensitive;
+
+ /**
+ * The field that indicates whether the value in this column is a cash value
+ * <code>true</code> means that it is; <code>false</code> that it is not.
+ *
+ * @serial
+ */
+ public boolean currency;
+
+ /**
+ * The field that indicates whether the value in this column is nullable.
+ * The possible values are the <code>ResultSet</code> constants
+ * <code>columnNoNulls</code>, <code>columnNullable</code>, and
+ * <code>columnNullableUnknown</code>.
+ *
+ * @serial
+ */
+ public int nullable;
+
+ /**
+ * The field that indicates whether the value in this column is a signed number.
+ * <code>true</code> means that it is; <code>false</code> that it is not.
+ *
+ * @serial
+ */
+ public boolean signed;
+
+ /**
+ * The field that indicates whether the value in this column can be used in
+ * a <code>WHERE</code> clause.
+ * <code>true</code> means that it can; <code>false</code> that it cannot.
+ *
+ * @serial
+ */
+ public boolean searchable;
+
+ /**
+ * The field that indicates the normal maximum width in characters for
+ * this column.
+ *
+ * @serial
+ */
+ public int columnDisplaySize;
+
+ /**
+ * The field that holds the suggested column title for this column, to be
+ * used in printing and displays.
+ *
+ * @serial
+ */
+ public String columnLabel;
+
+ /**
+ * The field that holds the name of this column.
+ *
+ * @serial
+ */
+ public String columnName;
+
+ /**
+ * The field that holds the schema name for the table from which this column
+ * was derived.
+ *
+ * @serial
+ */
+ public String schemaName;
+
+ /**
+ * The field that holds the precision of the value in this column. For number
+ * types, the precision is the total number of decimal digits; for character types,
+ * it is the maximum number of characters; for binary types, it is the maximum
+ * length in bytes.
+ *
+ * @serial
+ */
+ public int colPrecision;
+
+ /**
+ * The field that holds the scale (number of digits to the right of the decimal
+ * point) of the value in this column.
+ *
+ * @serial
+ */
+ public int colScale;
+
+ /**
+ * The field that holds the name of the table from which this column
+ * was derived. This value may be the empty string if there is no
+ * table name, such as when this column is produced by a join.
+ *
+ * @serial
+ */
+ public String tableName ="";
+
+ /**
+ * The field that holds the catalog name for the table from which this column
+ * was derived. If the DBMS does not support catalogs, the value may be the
+ * empty string.
+ *
+ * @serial
+ */
+ public String catName;
+
+ /**
+ * The field that holds the type code from the class <code>java.sql.Types</code>
+ * indicating the type of the value in this column.
+ *
+ * @serial
+ */
+ public int colType;
+
+ /**
+ * The field that holds the type name used by this particular data source
+ * for the value stored in this column.
+ *
+ * @serial
+ */
+ public String colTypeName;
+
+ /**
+ * The field that holds the updatability boolean per column of a RowSet
+ *
+ * @serial
+ */
+ public boolean readOnly = false;
+
+ /**
+ * The field that hold the writable boolean per column of a RowSet
+ *
+ *@serial
+ */
+ public boolean writable = true;
+
+ static final long serialVersionUID = 5490834817919311283L;
+ }
+}