Java Doc for NullMask.java in  » Database-Client » Jackcess » com » healthmarketscience » jackcess » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database Client » Jackcess » com.healthmarketscience.jackcess   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.healthmarketscience.jackcess.NullMask NullMask public class NullMask (Code) Bitmask that indicates whether or not each column in a row is null. Also holds values of boolean columns. author:    Tim McCune Constructor Summary public   NullMask(int columnCount)      Method Summary public  int byteSize()      public  boolean isNull(Column column)      Parameters:   column - column to test for null Whether or not the value for that column is null. public  void markNotNull(Column column)      Indicate that the column with the given number is not null (or a boolean value is true ). public  void read(ByteBuffer buffer)      public  void write(ByteBuffer buffer)      Constructor Detail NullMask public NullMask(int columnCount)(Code) Parameters:   columnCount - Number of columns in the row that this mask will beused for Method Detail byteSize public int byteSize()(Code) Size in bytes of this mask isNull public boolean isNull(Column column)(Code) Parameters:   column - column to test for null Whether or not the value for that column is null. For booleancolumns, returns the actual value of the column (wherenon- null == true ) markNotNull public void markNotNull(Column column)(Code) Indicate that the column with the given number is not null (or a boolean value is true ). Parameters:   column - column to be marked non- null read public void read(ByteBuffer buffer)(Code) Read a mask in from a buffer write public void write(ByteBuffer buffer)(Code) Write a mask to a buffer Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)