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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.catalog.types   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.derby.catalog.types.StatisticsImpl StatisticsImpl public class StatisticsImpl implements Statistics,Formatable(Code) Constructor Summary public   StatisticsImpl(long numRows, long numUnique)      Constructor for StatisticsImpl. public   StatisticsImpl()      Method Summary public  int getTypeFormatId()      public  void readExternal(ObjectInput in)      public  double selectivity(Object[] predicates)      public  String toString()      public  void writeExternal(ObjectOutput out)      Write this object to a stream of stored objects. Constructor Detail StatisticsImpl public StatisticsImpl(long numRows, long numUnique)(Code) Constructor for StatisticsImpl. Parameters:   numRows - number of rows in the conglomerate for whichthis statistic is being created. Parameters:   numUnique - number of unique values in the key for whichthis statistic is being created. StatisticsImpl public StatisticsImpl()(Code) Zero argument constructor for Formatable Interface Method Detail getTypeFormatId public int getTypeFormatId()(Code) the format id which corresponds to this class. readExternal public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException(Code) See Also:   java.io.Externalizable.readExternal selectivity public double selectivity(Object[] predicates)(Code) See Also:   Statistics.selectivity See Also:    toString public String toString()(Code) See Also:   java.lang.Object.toString See Also:    writeExternal public void writeExternal(ObjectOutput out) throws IOException(Code) Write this object to a stream of stored objects. Parameters:   out - write bytes here. exception:   IOException - thrown on error 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)