Java Doc for FreeLogicalRowIdPage.java in  » Database-DBMS » JDBM » jdbm » recman » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » JDBM » jdbm.recman   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    jdbm.recman.PageHeader       jdbm.recman.FreeLogicalRowIdPage FreeLogicalRowIdPage class FreeLogicalRowIdPage extends PageHeader (Code) Class describing a page that holds logical rowids that were freed. Note that the methods have *physical* rowids in their signatures - this is because logical and physical rowids are internally the same, only their external representation (i.e. in the client API) differs. Field Summary final static  short ELEMS_PER_PAGE      final static  short O_FREE      final  PhysicalRowId[] slots      Constructor Summary   FreeLogicalRowIdPage(BlockIo block)      Constructs a data page view from the indicated block. Method Summary  PhysicalRowId alloc(int slot)       void free(int slot)       PhysicalRowId get(int slot)       short getCount()       int getFirstAllocated()      Returns first allocated slot, -1 if no slots are available.  int getFirstFree()      static  FreeLogicalRowIdPage getFreeLogicalRowIdPageView(BlockIo block)      Factory method to create or return a data page for the indicated block.  boolean isAllocated(int slot)       boolean isFree(int slot)      Field Detail ELEMS_PER_PAGE final static short ELEMS_PER_PAGE(Code) O_FREE final static short O_FREE(Code) slots final PhysicalRowId[] slots(Code) Constructor Detail FreeLogicalRowIdPage FreeLogicalRowIdPage(BlockIo block)(Code) Constructs a data page view from the indicated block. Method Detail alloc PhysicalRowId alloc(int slot)(Code) Allocates a slot free void free(int slot)(Code) Frees a slot get PhysicalRowId get(int slot)(Code) Returns the value of the indicated slot getCount short getCount()(Code) Returns the number of free rowids getFirstAllocated int getFirstAllocated()(Code) Returns first allocated slot, -1 if no slots are available. getFirstFree int getFirstFree()(Code) Returns first free slot, -1 if no slots are available getFreeLogicalRowIdPageView static FreeLogicalRowIdPage getFreeLogicalRowIdPageView(BlockIo block)(Code) Factory method to create or return a data page for the indicated block. isAllocated boolean isAllocated(int slot)(Code) Returns true if a slot is allocated isFree boolean isFree(int slot)(Code) Returns true if a slot is free Fields inherited from jdbm.recman.PageHeader final protected static short SIZE(Code)(Java Doc) protected BlockIo block(Code)(Java Doc) Methods inherited from jdbm.recman.PageHeader short getMagic()(Code)(Java Doc) long getNext()(Code)(Java Doc) long getPrev()(Code)(Java Doc) static PageHeader getView(BlockIo block)(Code)(Java Doc) protected void paranoiaMagicOk()(Code)(Java Doc) void setNext(long next)(Code)(Java Doc) void setPrev(long prev)(Code)(Java Doc) void setType(short type)(Code)(Java Doc) 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)