Symantec Visual Cafe for Java 2.5/symantec-visual-cafe-2.5-database-dev-edition.iso/VCafe/prosrc.bin/ColumnMetaData.java

Java Source | 1998-03-18 | 4.8 KB | 201 lines

/*
 * @(#JDBCColumnMetaData.java
 *
 * Copyright (c) 1997 Symantec Corporation. All Rights Reserved.
 *
 */
 /**
 * <P> This class stores all information needed for a column
 */

package symantec.itools.db.beans.jdbc;

import symantec.itools.db.beans.binding.*;

public class ColumnMetaData implements PersistentObjectMemberModel
{
    //if the column is in a invalid state, therefore it won't be included in a where clause
    final static int VALID_STATE=1;
    final static int INVALID_STATE=0;
    //Constructors
    /**
    * Constructor. An empty constructor
    */
    public ColumnMetaData() {
    }

    private boolean isPrimaryKey=false;
    private int columnState=VALID_STATE;
    public String m_ColumnName;



     /**
     * Gets if a Column is Primary Key
     * @return boolean.      .
     */
    public synchronized boolean isPrimaryKey() {
        return isPrimaryKey;
    }

     /**
     * Sets if a Column is Primary Key
     * @param value.
     */
    public synchronized void setPrimaryKey(boolean value) {
         isPrimaryKey= value;
    }


    public synchronized boolean canBeIncludedInWhereClause()
    {
        boolean isNotBlob = !(getColumnDataType()==java.sql.Types.LONGVARBINARY ||
            getColumnDataType()==java.sql.Types.LONGVARCHAR);
        boolean isComparable=getIsComparable();
        boolean isValid=(getColumnState()==VALID_STATE);
        return isNotBlob && isComparable &&  isValid;
    }


      /**
     * Gets the State of the Column
     * @return int.     The state of the Column .
     */
    public synchronized int getColumnState() {
        return columnState;
    }

     /**
     * Sets the  State of the Column
     * @param value.     The state of the Column.
     */
    public synchronized void setColumnState(int value) {
        if (value!= VALID_STATE || value !=INVALID_STATE){
            return;
        }
        columnState = value;
    }

      /**
     * Gets the Name of the Column
     * @return String.     The name of the Column .
     */
    public String getColumnName() {
        return m_ColumnName;
    }

     /**
     * Gets the  Name of the Column
     * @param value.     The name of the Column.
     */
    public void setColumnName(String value) {
        m_ColumnName = value;
    }

    public int m_ColumnDataType;

     /**
     * Gets the DataType of the Column
     * @return String.     The JDBC Data Type of the Column .
     */
    public int getColumnDataType() {
        return m_ColumnDataType;
    }

     /**
     * Sets the DataType of the Column
     * @param value.     The JDBC Data Type of the Column .
     */
    public void setColumnDataType(int value) {
        m_ColumnDataType = value;
    }

    public boolean m_IsComparable;

     /**
     * Gets if the data type of a column is comparable with <,>,=,!=
     * @return boolean.      .
     */
    public boolean getIsComparable() {
        return m_IsComparable;
    }

     /**
     * Sets if the data type of a column is comparable with <,>,=,!=
     * @param value.      .
     */
    public void setIsComparable(boolean value) {
        m_IsComparable = value;
    }

    public boolean m_IsAutoIncrement;

     /**
     * Gets if the data type of a column is comparable with <,>,=,!=
     * @return boolean.      .
     */
    public boolean getIsAutoIncrement() {
        return m_IsAutoIncrement;
    }

     /**
     * Sets if the data type of a column is comparable with <,>,=,!=
     * @param value.      .
     */
    public void setIsAutoIncrement(boolean value) {
        m_IsAutoIncrement = value;
    }
    public boolean m_IsSigned;

     /**
     * Gets if the data type of a column is comparable with <,>,=,!=
     * @return boolean.      .
     */
    public boolean getIsSigned() {
        return m_IsSigned;
    }

     /**
     * Sets if the data type of a column is comparable with <,>,=,!=
     * @param value.      .
     */
    public void setIsSigned(boolean value) {
        m_IsSigned = value;
    }

    public boolean m_IsReadOnly;

     /**
     * Gets if the data type of a column is comparable with <,>,=,!=
     * @return boolean.      .
     */
    public boolean getIsReadOnly() {
        return m_IsReadOnly;
    }

     /**
     * Sets if the data type of a column is comparable with <,>,=,!=
     * @param value.      .
     */
    public void setIsReadOnly(boolean value) {
        m_IsReadOnly = value;
    }

    // PersistentObjectMemberModel interface methods...

    public String getName()
    {
        return getColumnName();
    }

    public int getType()
    {
        return getColumnDataType();
    }

    public boolean isWritable()
    {
        return !getIsReadOnly();
    }
}