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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.comparator.ChainedComparator
public class ChainedComparator
Composite comparator implementation based on a collection of comparators. The comparators in the array assumed to be sorted according to their priorities; only in a case when the n-th comparator cannot determine the order of the passed objects:
aComparator[n].compare(o1, o2) == 0
the (n+1)-th comparator will be applied to calculate the value.
Field Summary | |
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protected java.util.Comparator[] |
m_aComparator The Comparator array. |
Constructor Summary | |
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ChainedComparator() Default constructor (for ExternalizableLite and PortableObject). |
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ChainedComparator(java.util.Comparator[] aComparator) Construct a ChainedComparator. |
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ChainedComparator(java.util.Comparator comparator1, java.util.Comparator comparator2) Construct a ChainedComparator with the specified comparators. |
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ChainedComparator(java.util.Comparator comparator1, java.util.Comparator comparator2, java.util.Comparator comparator3) Construct a ChainedComparator with the specified comparators. |
Method Summary | |
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int |
compare(java.lang.Object o1, java.lang.Object o2) Compares its two arguments for order. |
int |
compareEntries(QueryMap.Entry entry1, QueryMap.Entry entry2) Compare two entries based on the rules specified by Comparator . |
boolean |
equals(java.lang.Object o) Determine if two ChainedComparator objects are equal. |
java.util.Comparator[] |
getComparators() Obtain the underlying Comparator array. |
int |
hashCode() Return the hash code for this comparator. |
boolean |
isKeyComparator() Specifies whether this comparator expects to compare keys or values. |
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() Return a human-readable description for this ChainedComparator. |
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. |
Field Detail |
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protected java.util.Comparator[] m_aComparator
Constructor Detail |
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public ChainedComparator()
public ChainedComparator(java.util.Comparator comparator1, java.util.Comparator comparator2)
comparator1
- the first comparatorcomparator2
- the second comparatorpublic ChainedComparator(java.util.Comparator comparator1, java.util.Comparator comparator2, java.util.Comparator comparator3)
comparator1
- the first comparatorcomparator2
- the second comparatorcomparator3
- the third comparatorpublic ChainedComparator(java.util.Comparator[] aComparator)
aComparator
- the comparator arrayMethod Detail |
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public int compare(java.lang.Object o1, java.lang.Object o2)
compare
in interface java.util.Comparator
o1
- the first object to be comparedo2
- the second object to be comparedjava.lang.ClassCastException
- if the arguments' types prevent them from being compared by this Comparator.public int compareEntries(QueryMap.Entry entry1, QueryMap.Entry entry2)
Comparator
.
This implementation simply passes on this invocation to the wrapped Comparator objects if they too implement this interface, or invokes their default compare method passing the values extracted from the passed entries.
compareEntries
in interface QueryMapComparator
entry1
- the first entry to compare values from; read-onlyentry2
- the second entry to compare values from; read-onlypublic boolean isKeyComparator()
isKeyComparator
in interface EntryAwareComparator
public java.lang.String toString()
public boolean equals(java.lang.Object o)
equals
in interface java.util.Comparator
o
- the other comparatorObject.equals(java.lang.Object)
, Object.hashCode()
public int hashCode()
public java.util.Comparator[] getComparators()
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 occurs
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Oracle® Coherence Java API Reference Release 3.7.1.0 E22843-01 |
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SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |