Java Doc for BtreeIndex.java in  » Database-DBMS » h2database » org » h2 » index » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » h2database » org.h2.index   Source Cross Reference   Class Diagram   Java Document (Java Doc)   org.h2.index.BaseIndex    org.h2.index.BtreeIndex BtreeIndex public class BtreeIndex extends BaseIndex implements RecordReader(Code) This is the most common type of index, a b tree index. The index structure is: There is one BtreeHead that points to the root page. The head always stays where it is. There is a number of BtreePage s. Each page is either a BtreeNode or a BtreeLeaf . A node page links to other leaf pages or to node pages. Leaf pages don't point to other pages (but may have a parent). The uppermost page is the root page. If pages are added or deleted, the root page may change. Only the data of the indexed columns are stored in the index. Constructor Summary public   BtreeIndex(Session session, TableData table, int id, String indexName, IndexColumn[] columns, IndexType indexType, int headPos)      Method Summary public  void add(Session session, Row r)       void addPage(Session session, Record p)      public  boolean canFindNext()      public  boolean canGetFirstOrLast()      public  void checkRename()      public  void close(Session session)       void deletePage(Session session, Record p)      public  Cursor find(Session session, SearchRow first, SearchRow last)      public  SearchRow findFirstOrLast(Session session, boolean first)      public  Cursor findNext(Session session, SearchRow first, SearchRow last)      public  void flush(Session session)      public  double getCost(Session session, int[] masks)      public  int getHeadPos()      public  long getLastChange()      public  int getLookupCost(int rowCount)      public  BtreePage getPage(Session session, int i)      public  int getRecordOverhead()      public  Row getRow(Session session, int pos)       SearchRow getSearchRow(Row row)      public  boolean needRebuild()      public  Record read(Session session, DataPage s)       ObjectArray readRowArray(DataPage s)      public  void remove(Session session)      public  void remove(Session session, Row row)      public  void truncate(Session session)       void updatePage(Session session, Record p)      Constructor Detail BtreeIndex public BtreeIndex(Session session, TableData table, int id, String indexName, IndexColumn[] columns, IndexType indexType, int headPos) throws SQLException(Code) Method Detail add public void add(Session session, Row r) throws SQLException(Code) addPage void addPage(Session session, Record p) throws SQLException(Code) canFindNext public boolean canFindNext()(Code) canGetFirstOrLast public boolean canGetFirstOrLast()(Code) checkRename public void checkRename() throws SQLException(Code) close public void close(Session session) throws SQLException(Code) deletePage void deletePage(Session session, Record p) throws SQLException(Code) find public Cursor find(Session session, SearchRow first, SearchRow last) throws SQLException(Code) findFirstOrLast public SearchRow findFirstOrLast(Session session, boolean first) throws SQLException(Code) findNext public Cursor findNext(Session session, SearchRow first, SearchRow last) throws SQLException(Code) flush public void flush(Session session) throws SQLException(Code) getCost public double getCost(Session session, int[] masks) throws SQLException(Code) getHeadPos public int getHeadPos()(Code) getLastChange public long getLastChange()(Code) getLookupCost public int getLookupCost(int rowCount)(Code) getPage public BtreePage getPage(Session session, int i) throws SQLException(Code) getRecordOverhead public int getRecordOverhead()(Code) getRow public Row getRow(Session session, int pos) throws SQLException(Code) getSearchRow SearchRow getSearchRow(Row row)(Code) needRebuild public boolean needRebuild()(Code) read public Record read(Session session, DataPage s) throws SQLException(Code) readRowArray ObjectArray readRowArray(DataPage s) throws SQLException(Code) remove public void remove(Session session) throws SQLException(Code) remove public void remove(Session session, Row row) throws SQLException(Code) truncate public void truncate(Session session) throws SQLException(Code) updatePage void updatePage(Session session, Record p) throws SQLException(Code) Fields inherited from org.h2.index.BaseIndex protected int[] columnIds(Code)(Java Doc) protected Column[] columns(Code)(Java Doc) protected boolean[] descending(Code)(Java Doc) protected IndexColumn[] indexColumns(Code)(Java Doc) protected IndexType indexType(Code)(Java Doc) protected long rowCount(Code)(Java Doc) protected Table table(Code)(Java Doc) Methods inherited from org.h2.index.BaseIndex abstract public void add(Session session, Row row) throws SQLException(Code)(Java Doc) public boolean canFindNext()(Code)(Java Doc) abstract public boolean canGetFirstOrLast()(Code)(Java Doc) abstract public void close(Session session) throws SQLException(Code)(Java Doc) public void commit(int operation, Row row) throws SQLException(Code)(Java Doc) public int compareKeys(SearchRow rowData, SearchRow compare)(Code)(Java Doc) public int compareRows(SearchRow rowData, SearchRow compare) throws SQLException(Code)(Java Doc) abstract public Cursor find(Session session, SearchRow first, SearchRow last) throws SQLException(Code)(Java Doc) abstract public SearchRow findFirstOrLast(Session session, boolean first) throws SQLException(Code)(Java Doc) public Cursor findNext(Session session, SearchRow first, SearchRow last) throws SQLException(Code)(Java Doc) public int getColumnIndex(Column col)(Code)(Java Doc) public String getColumnListSQL()(Code)(Java Doc) public Column[] getColumns()(Code)(Java Doc) abstract public double getCost(Session session, int[] masks) throws SQLException(Code)(Java Doc) public long getCostRangeIndex(int[] masks, long rowCount) throws SQLException(Code)(Java Doc) public String getCreateSQL()(Code)(Java Doc) public String getCreateSQLForCopy(Table table, String quotedName)(Code)(Java Doc) public String getDropSQL()(Code)(Java Doc) public SQLException getDuplicateKeyException()(Code)(Java Doc) public IndexColumn[] getIndexColumns()(Code)(Java Doc) public IndexType getIndexType()(Code)(Java Doc) public int getLookupCost(long rowCount)(Code)(Java Doc) public String getPlanSQL()(Code)(Java Doc) public long getRowCount(Session session)(Code)(Java Doc) public Table getTable()(Code)(Java Doc) public int getType()(Code)(Java Doc) public boolean isNull(Row newRow)(Code)(Java Doc) abstract public boolean needRebuild()(Code)(Java Doc) abstract public void remove(Session session, Row row) throws SQLException(Code)(Java Doc) abstract public void remove(Session session) throws SQLException(Code)(Java Doc) public void removeChildrenAndResources(Session session) throws SQLException(Code)(Java Doc) abstract public void truncate(Session session) throws SQLException(Code)(Java Doc)