Top Description Fields Constructors Methods
org.hsqldb.persist

public abstract Class CachedObjectBase

extends Object
implements CachedObject
Class Inheritance
All Implemented Interfaces
org.hsqldb.persist.CachedObject
Known Direct Subclasses
org.hsqldb.persist.DirectoryBlockCachedObject, org.hsqldb.persist.DoubleIntArrayCachedObject, org.hsqldb.persist.IntArrayCachedObject, org.hsqldb.persist.BitMapCachedObject
Imports
org.hsqldb.error.Error, .ErrorCode

Base class for a stored simple object.
Author
Fred Toussi (fredt@users dot sourceforge dot net)
Version
2.3.3

Field Summary

Modifier and TypeField and Description
pack-priv int
pack-priv boolean
pack-priv boolean
pack-priv boolean
pack-priv int
pack-priv long
pack-priv int

Constructor Summary

AccessConstructor and Description
public

Method Summary

Modifier and TypeMethod and Description
public void
public boolean
equals(Object other)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

public int
public long
public int
public boolean
public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for this object.

public final boolean
public boolean
public final boolean
public boolean
public boolean
public boolean
public boolean
public void
public final void
public void
public void
public void
public void
Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

accessCountback to summary
pack-priv int accessCount
hasChangedback to summary
pack-priv boolean hasChanged
isInMemoryback to summary
pack-priv boolean isInMemory
isMemoryback to summary
pack-priv boolean isMemory
keepCountback to summary
pack-priv int keepCount
positionback to summary
pack-priv long position
storageSizeback to summary
pack-priv int storageSize

Constructor Detail

CachedObjectBaseback to summary
public CachedObjectBase()

Method Detail

destroyback to summary
public void destroy()

Implements org.hsqldb.persist.CachedObject.destroy.

equalsback to summary
public boolean equals(Object other)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

getAccessCountback to summary
public int getAccessCount()

Implements org.hsqldb.persist.CachedObject.getAccessCount.

getPosback to summary
public long getPos()

Implements org.hsqldb.persist.CachedObject.getPos.

getStorageSizeback to summary
public int getStorageSize()

Implements org.hsqldb.persist.CachedObject.getStorageSize.

hasChangedback to summary
public boolean hasChanged()

Implements org.hsqldb.persist.CachedObject.hasChanged.

hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
isBlockback to summary
public final boolean isBlock()

Implements org.hsqldb.persist.CachedObject.isBlock.

isInMemoryback to summary
public boolean isInMemory()

Implements org.hsqldb.persist.CachedObject.isInMemory.

isInvariableback to summary
public final boolean isInvariable()

Implements org.hsqldb.persist.CachedObject.isInvariable.

isKeepInMemoryback to summary
public boolean isKeepInMemory()

Implements org.hsqldb.persist.CachedObject.isKeepInMemory.

isMemoryback to summary
public boolean isMemory()

Implements org.hsqldb.persist.CachedObject.isMemory.

isNewback to summary
public boolean isNew()

Implements org.hsqldb.persist.CachedObject.isNew.

keepInMemoryback to summary
public boolean keepInMemory(boolean keep)

Implements org.hsqldb.persist.CachedObject.keepInMemory.

restoreback to summary
public void restore()

Implements org.hsqldb.persist.CachedObject.restore.

setChangedback to summary
public final void setChanged(boolean flag)

Implements org.hsqldb.persist.CachedObject.setChanged.

setInMemoryback to summary
public void setInMemory(boolean in)

Implements org.hsqldb.persist.CachedObject.setInMemory.

setPosback to summary
public void setPos(long pos)

Implements org.hsqldb.persist.CachedObject.setPos.

setStorageSizeback to summary
public void setStorageSize(int size)

Implements org.hsqldb.persist.CachedObject.setStorageSize.

updateAccessCountback to summary
public void updateAccessCount(int count)

Implements org.hsqldb.persist.CachedObject.updateAccessCount.