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Oracle® Coherence Java API Reference v3.5 E14977-01 |
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java.lang.Objectcom.tangosol.util.Base
com.tangosol.util.BitHelper
com.tangosol.util.ExternalizableHelper
com.tangosol.util.extractor.AbstractExtractor
com.tangosol.util.extractor.ReflectionExtractor
public class ReflectionExtractor
Reflection-based ValueExtractor implementation.
ChainedExtractor
Field Summary | |
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protected java.lang.Object[] |
m_aoParam
The parameter array. |
protected java.lang.String |
m_sMethod
The name of the method to invoke. |
Fields inherited from class com.tangosol.util.extractor.AbstractExtractor |
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KEY, m_nTarget, VALUE |
Constructor Summary | |
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ReflectionExtractor()
Default constructor (necessary for the ExternalizableLite interface). |
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ReflectionExtractor(java.lang.String sMethod)
Construct a ReflectionExtractor based on a method name. |
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ReflectionExtractor(java.lang.String sMethod,
java.lang.Object[] aoParam)
Construct a ReflectionExtractor based on a method name and optional parameters. |
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ReflectionExtractor(java.lang.String sMethod,
java.lang.Object[] aoParam,
int nTarget)
Construct a ReflectionExtractor based on a method name, optional parameters and the entry extraction target. |
Method Summary | |
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boolean |
equals(java.lang.Object o)
Compare the ReflectionExtractor with another object to determine equality. |
java.lang.Object |
extract(java.lang.Object oTarget)
Extract the value from the passed object. The returned value may be null. For intrinsic types, the returned value is expected to be a standard wrapper type in the same manner that reflection works; for example, int would be returned as a java.lang.Integer. |
java.lang.String |
getMethodName()
Determine the name of the method that this extractor is configured to invoke. |
java.lang.Object[] |
getParameters()
Return the array of arguments used to invoke the method. |
int |
hashCode()
Determine a hash value for the ReflectionExtractor object according to the general Object.hashCode() contract. |
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()
Provide a human-readable description of this ReflectionExtractor 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.extractor.AbstractExtractor |
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compare, compareEntries, extractFromEntry |
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 |
Field Detail |
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protected java.lang.String m_sMethod
protected java.lang.Object[] m_aoParam
Constructor Detail |
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public ReflectionExtractor()
public ReflectionExtractor(java.lang.String sMethod)
sMethod
- the name of the method to invoke via reflectionpublic ReflectionExtractor(java.lang.String sMethod, java.lang.Object[] aoParam)
sMethod
- the name of the method to invoke via reflectionaoParam
- the array of arguments to be used in the method
invocation; may be nullpublic ReflectionExtractor(java.lang.String sMethod, java.lang.Object[] aoParam, int nTarget)
sMethod
- the name of the method to invoke via reflectionaoParam
- the array of arguments to be used in the method
invocation; may be nullnTarget
- one of the AbstractExtractor.VALUE
or AbstractExtractor.KEY
valuesMethod Detail |
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public java.lang.Object extract(java.lang.Object oTarget)
extract
in interface ValueExtractor
extract
in class AbstractExtractor
oTarget
- an Object to retrieve the value from
public boolean equals(java.lang.Object o)
equals
in interface ValueExtractor
equals
in interface java.util.Comparator
o
- the reference object with which to compare
public int hashCode()
Object.hashCode()
contract.
hashCode
in interface ValueExtractor
public java.lang.String toString()
toString
in interface ValueExtractor
public java.lang.String getMethodName()
public java.lang.Object[] getParameters()
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 object
java.io.IOException
- if an I/O exception occurs
java.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 to
java.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 state
java.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 state
java.io.IOException
- if an I/O error occurs
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Oracle® Coherence Java API Reference v3.5 E14977-01 |
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