@ -334,8 +334,7 @@ public class kelondroRecords {
protected void deleteNode ( Handle handle ) throws IOException {
if ( cachesize ! = 0 ) {
Node n = ( Node ) cache . get ( handle ) ;
if ( n ! = null ) synchronized ( cache ) {
if ( cache . get ( handle ) ! = null ) synchronized ( cache ) {
cacheScore . deleteScore ( handle ) ;
cache . remove ( handle ) ;
}
@ -439,23 +438,26 @@ public class kelondroRecords {
if ( this . handle . index = = NUL ) throw new kelondroException ( filename , "the entry has no index assigned" ) ;
return new Handle ( this . handle . index ) ;
}
protected synchronized void setOHByte ( byte [ ] b ) throws IOException {
protected void setOHByte ( byte [ ] b ) throws IOException {
if ( b = = null ) throw new IllegalArgumentException ( "setOHByte: setting null value does not make any sense" ) ;
if ( b . length ! = OHBYTEC ) throw new IllegalArgumentException ( "setOHByte: wrong array size" ) ;
if ( this . handle . index = = NUL ) throw new kelondroException ( filename , "setOHByte: no handle assigned" ) ;
if ( this . ohBytes = = null ) this . ohBytes = new byte [ OHBYTEC ] ;
synchronized ( entryFile ) {
entryFile . seek ( seekpos ( this . handle ) ) ;
for ( int j = 0 ; j < ohBytes . length ; j + + ) {
ohBytes [ j ] = b [ j ] ;
entryFile . writeByte ( b [ j ] ) ;
}
}
updateNode ( ) ;
}
protected synchronized void setOHHandle ( Handle [ ] i ) throws IOException {
protected void setOHHandle ( Handle [ ] i ) throws IOException {
if ( i = = null ) throw new IllegalArgumentException ( "setOHint: setting null value does not make any sense" ) ;
if ( i . length ! = OHHANDLEC ) throw new IllegalArgumentException ( "setOHHandle: wrong array size" ) ;
if ( this . handle . index = = NUL ) throw new kelondroException ( filename , "setOHHandle: no handle assigned" ) ;
if ( this . ohHandle = = null ) this . ohHandle = new Handle [ OHHANDLEC ] ;
synchronized ( entryFile ) {
entryFile . seek ( seekpos ( this . handle ) + OHBYTEC ) ;
for ( int j = 0 ; j < ohHandle . length ; j + + ) {
ohHandle [ j ] = i [ j ] ;
@ -464,35 +466,40 @@ public class kelondroRecords {
else
entryFile . writeInt ( i [ j ] . index ) ;
}
}
updateNode ( ) ;
}
protected synchronized byte [ ] getOHByte ( ) throws IOException {
protected byte [ ] getOHByte ( ) throws IOException {
if ( ohBytes = = null ) {
if ( this . handle . index = = NUL ) throw new kelondroException ( filename , "Cannot load OH values" ) ;
ohBytes = new byte [ OHBYTEC ] ;
synchronized ( entryFile ) {
entryFile . seek ( seekpos ( this . handle ) ) ;
for ( int j = 0 ; j < ohBytes . length ; j + + ) {
ohBytes [ j ] = entryFile . readByte ( ) ;
}
}
updateNode ( ) ;
}
return ohBytes ;
}
protected synchronized Handle [ ] getOHHandle ( ) throws IOException {
protected Handle [ ] getOHHandle ( ) throws IOException {
if ( ohHandle = = null ) {
if ( this . handle . index = = NUL ) throw new kelondroException ( filename , "Cannot load OH values" ) ;
ohHandle = new Handle [ OHHANDLEC ] ;
synchronized ( entryFile ) {
entryFile . seek ( seekpos ( this . handle ) + OHBYTEC ) ;
int i ;
for ( int j = 0 ; j < ohHandle . length ; j + + ) {
i = entryFile . readInt ( ) ;
ohHandle [ j ] = ( i = = NUL ) ? null : new Handle ( i ) ;
}
}
updateNode ( ) ;
}
return ohHandle ;
}
public synchronized byte [ ] [ ] setValues ( byte [ ] [ ] row ) throws IOException {
public byte [ ] [ ] setValues ( byte [ ] [ ] row ) throws IOException {
// if the index is defined, then write values directly to the file, else only to the object
byte [ ] [ ] result = getValues ( ) ; // previous value (this loads the values if not already happened)
if ( this . values = = null ) this . values = new byte [ COLWIDTHS . length ] [ ] ;
@ -501,35 +508,41 @@ public class kelondroRecords {
}
if ( this . handle . index ! = NUL ) {
// store data directly to database
synchronized ( entryFile ) {
long seek = seekpos ( this . handle ) + overhead ;
for ( int i = 0 ; i < values . length ; i + + ) {
entryFile . seek ( seek ) ;
if ( values [ i ] = = null ) {
for ( int j = 0 ; j < COLWIDTHS [ i ] ; j + + ) entryFile . writeByte ( 0 ) ;
for ( int j = 0 ; j < COLWIDTHS [ i ] ; j + + )
entryFile . writeByte ( 0 ) ;
} else if ( values [ i ] . length > = COLWIDTHS [ i ] ) {
entryFile . write ( values [ i ] , 0 , COLWIDTHS [ i ] ) ;
} else {
entryFile . write ( values [ i ] ) ;
for ( int j = values [ i ] . length ; j < COLWIDTHS [ i ] ; j + + ) entryFile . writeByte ( 0 ) ;
for ( int j = values [ i ] . length ; j < COLWIDTHS [ i ] ; j + + )
entryFile . writeByte ( 0 ) ;
}
seek = seek + COLWIDTHS [ i ] ;
}
}
}
//System.out.print("setValues result: "); for (int i = 0; i < values.length; i++) System.out.print(new String(result[i]) + " "); System.out.println(".");
updateNode ( ) ;
return result ; // return previous value
}
public synchronized byte [ ] getKey ( ) throws IOException {
public byte [ ] getKey ( ) throws IOException {
if ( ( values = = null ) | | ( values [ 0 ] = = null ) ) {
// load from database, but ONLY the key!
if ( this . handle . index = = NUL ) {
throw new kelondroException ( filename , "Cannot load Key" ) ;
} else {
values = new byte [ COLWIDTHS . length ] [ ] ;
entryFile . seek ( seekpos ( this . handle ) + overhead ) ;
values [ 0 ] = new byte [ COLWIDTHS [ 0 ] ] ;
synchronized ( entryFile ) {
entryFile . seek ( seekpos ( this . handle ) + overhead ) ;
entryFile . read ( values [ 0 ] , 0 , values [ 0 ] . length ) ;
}
for ( int i = 1 ; i < COLWIDTHS . length ; i + + ) values [ i ] = null ;
updateNode ( ) ;
return values [ 0 ] ;
@ -539,13 +552,14 @@ public class kelondroRecords {
}
}
public synchronized byte [ ] [ ] getValues ( ) throws IOException {
public byte [ ] [ ] getValues ( ) throws IOException {
if ( ( values = = null ) | | ( values [ 0 ] = = null ) ) {
// load ALL values from database
if ( this . handle . index = = NUL ) {
throw new kelondroException ( filename , "Cannot load values" ) ;
} else {
values = new byte [ COLWIDTHS . length ] [ ] ;
synchronized ( entryFile ) {
long seek = seekpos ( this . handle ) + overhead ;
for ( int i = 0 ; i < COLWIDTHS . length ; i + + ) {
entryFile . seek ( seek ) ;
@ -553,11 +567,13 @@ public class kelondroRecords {
entryFile . read ( values [ i ] , 0 , values [ i ] . length ) ;
seek = seek + COLWIDTHS [ i ] ;
}
}
updateNode ( ) ;
return values ;
}
} else if ( ( values . length > 1 ) & & ( values [ 1 ] = = null ) ) {
// only the key has been read; load the remaining
synchronized ( entryFile ) {
long seek = seekpos ( this . handle ) + overhead + COLWIDTHS [ 0 ] ;
for ( int i = 1 ; i < COLWIDTHS . length ; i + + ) {
entryFile . seek ( seek ) ;
@ -565,6 +581,7 @@ public class kelondroRecords {
entryFile . read ( values [ i ] , 0 , values [ i ] . length ) ;
seek = seek + COLWIDTHS [ i ] ;
}
}
updateNode ( ) ;
return values ;
} else {
@ -679,17 +696,17 @@ public class kelondroRecords {
}
// Removes all mappings from this map (optional operation).
public synchronized void clear ( ) {
public void clear ( ) {
throw new UnsupportedOperationException ( "clear not supported" ) ;
}
// Returns true if this map contains no key-value mappings.
public synchronized boolean isEmpty ( ) {
public boolean isEmpty ( ) {
return ( USEDC = = 0 ) ;
}
// Returns the number of key-value mappings in this map.
public synchronized int size ( ) {
public int size ( ) {
return this . USEDC ;
}
@ -701,6 +718,7 @@ public class kelondroRecords {
// delete element with handle h
// this element is then connected to the deleted-chain and can be re-used
// change counter
synchronized ( entryFile ) {
USEDC - - ; entryFile . seek ( POS_USEDC ) ; entryFile . writeInt ( USEDC ) ;
FREEC + + ; entryFile . seek ( POS_FREEC ) ; entryFile . writeInt ( FREEC ) ;
// change pointer
@ -715,8 +733,9 @@ public class kelondroRecords {
this . FREEH = h ;
entryFile . seek ( POS_FREEH ) ; entryFile . writeInt ( this . FREEH . index ) ;
}
}
public synchronized void close ( ) throws IOException {
public void close ( ) throws IOException {
if ( this . entryFile ! = null ) this . entryFile . close ( ) ;
this . entryFile = null ;
}
@ -758,7 +777,7 @@ public class kelondroRecords {
return x ;
}
public synchronized void print ( boolean records ) {
public void print ( boolean records ) {
System . out . println ( "REPORT FOR FILE '" + this . filename + "':" ) ;
System . out . println ( "--" ) ;
System . out . println ( "CONTROL DATA" ) ;
@ -856,5 +875,4 @@ public class kelondroRecords {
}
}
}
orbiter
20 years ago