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Oracle® Coherence Java API Reference Release 3.7.1.0 E22843-01 |
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java.lang.Object
com.tangosol.util.Base
com.tangosol.util.BitHelper
com.tangosol.util.ExternalizableHelper
com.tangosol.util.CompositeKey
public class CompositeKey
Key class that consists of a primary and secondary component. Two instances of CompositeKey are considered to be equal iff both the primary and secondary components of the two instances are considered equal. Additionally, the hash code of a CompositeKey takes into the consideration the hash codes of its two components. Finally, the CompositeKey class implements KeyAssociation by returning the primary component.
Constructor Summary | |
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CompositeKey() Default constructor. |
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CompositeKey(java.lang.Object oPrimary, java.lang.Object oSecondary) Create a new CompositeKey that consists of the given primary and secondary components. |
Method Summary | |
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boolean |
equals(java.lang.Object o) Indicates whether some other object is "equal to" this one. |
java.lang.Object |
getAssociatedKey() Determine the key object to which this key object is associated. |
java.lang.Object |
getPrimaryKey() Return the primary key component. |
java.lang.Object |
getSecondaryKey() Return the secondary key component. |
int |
hashCode() Returns a hash code value for this object. |
void |
readExternal(java.io.DataInput in) Restore the contents of this object by loading the object's state from the passed DataInput object. |
void |
readExternal(PofReader in) Restore the contents of a user type instance by reading its state using the specified PofReader object. |
java.lang.String |
toString() Returns a string representation of the object. |
void |
writeExternal(java.io.DataOutput out) Save the contents of this object by storing the object's state into the passed DataOutput object. |
void |
writeExternal(PofWriter out) Save the contents of a POF user type instance by writing its state using the specified PofWriter object. |
Methods inherited from class com.tangosol.util.BitHelper |
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countBits, countBits, countBits, indexOfLSB, indexOfLSB, indexOfLSB, indexOfMSB, indexOfMSB, indexOfMSB, rotateLeft, rotateLeft, rotateLeft, rotateRight, rotateRight, rotateRight, toBitString, toBitString, toBitString |
Constructor Detail |
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public CompositeKey()
public CompositeKey(java.lang.Object oPrimary, java.lang.Object oSecondary)
oPrimary
- the primary key component; must not be null. This is also the host key returned by the KeyAssociation implementationoSecondary
- the secondary key component; must not be nullMethod Detail |
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public java.lang.Object getAssociatedKey()
getAssociatedKey
in interface KeyAssociation
public void readExternal(java.io.DataInput in) throws java.io.IOException
readExternal
in interface ExternalizableLite
in
- the DataInput stream to read data from in order to restore the state of this objectjava.io.IOException
- if an I/O exception occursjava.io.NotActiveException
- if the object is not in its initial state, and therefore cannot be deserialized intopublic void writeExternal(java.io.DataOutput out) throws java.io.IOException
writeExternal
in interface ExternalizableLite
out
- the DataOutput stream to write the state of this object tojava.io.IOException
- if an I/O exception occurspublic void readExternal(PofReader in) throws java.io.IOException
readExternal
in interface PortableObject
in
- the PofReader from which to read the object's statejava.io.IOException
- if an I/O error occurspublic void writeExternal(PofWriter out) throws java.io.IOException
writeExternal
in interface PortableObject
out
- the PofWriter to which to write the object's statejava.io.IOException
- if an I/O error occurspublic int hashCode()
public boolean equals(java.lang.Object o)
o
- the reference object with which to compare.true
if this object is the same as the obj argument; false
otherwise.public java.lang.String toString()
public java.lang.Object getPrimaryKey()
public java.lang.Object getSecondaryKey()
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Oracle® Coherence Java API Reference Release 3.7.1.0 E22843-01 |
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