Package org.apache.derby.catalog.types
Class UDTAliasInfo
- java.lang.Object
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- org.apache.derby.catalog.types.UDTAliasInfo
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- All Implemented Interfaces:
java.io.Externalizable
,java.io.Serializable
,AliasInfo
,Formatable
,TypedFormat
public class UDTAliasInfo extends java.lang.Object implements AliasInfo, Formatable
Describe an A (Abstract Data Type) alias. For the first release of USer Defined Types, this is a vacuous object. Future revs may add real information to this object. The UDTAliasInfo maintains a version stamp so that it can evolve its persistent form over time.- See Also:
AliasInfo
, Serialized Form
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Field Summary
Fields Modifier and Type Field Description private static int
FIRST_VERSION
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Fields inherited from interface org.apache.derby.catalog.AliasInfo
ALIAS_NAME_SPACE_AGGREGATE_AS_CHAR, ALIAS_NAME_SPACE_AGGREGATE_AS_STRING, ALIAS_NAME_SPACE_FUNCTION_AS_CHAR, ALIAS_NAME_SPACE_FUNCTION_AS_STRING, ALIAS_NAME_SPACE_PROCEDURE_AS_CHAR, ALIAS_NAME_SPACE_PROCEDURE_AS_STRING, ALIAS_NAME_SPACE_SYNONYM_AS_CHAR, ALIAS_NAME_SPACE_SYNONYM_AS_STRING, ALIAS_NAME_SPACE_UDT_AS_CHAR, ALIAS_NAME_SPACE_UDT_AS_STRING, ALIAS_TYPE_AGGREGATE_AS_CHAR, ALIAS_TYPE_AGGREGATE_AS_STRING, ALIAS_TYPE_FUNCTION_AS_CHAR, ALIAS_TYPE_FUNCTION_AS_STRING, ALIAS_TYPE_PROCEDURE_AS_CHAR, ALIAS_TYPE_PROCEDURE_AS_STRING, ALIAS_TYPE_SYNONYM_AS_CHAR, ALIAS_TYPE_SYNONYM_AS_STRING, ALIAS_TYPE_UDT_AS_CHAR, ALIAS_TYPE_UDT_AS_STRING
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Constructor Summary
Constructors Constructor Description UDTAliasInfo()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
getMethodName()
Get the name of the static method that the alias represents at the source database.int
getTypeFormatId()
Get the formatID which corresponds to this class.boolean
isTableFunction()
Return true if this alias is a Table Function.void
readExternal(java.io.ObjectInput in)
Read this object from a stream of stored objects.java.lang.String
toString()
This is used by dblook to reconstruct the UDT-specific parts of the ddl needed to recreate this alias.void
writeExternal(java.io.ObjectOutput out)
Write this object to a stream of stored objects.
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Field Detail
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FIRST_VERSION
private static final int FIRST_VERSION
- See Also:
- Constant Field Values
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Method Detail
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isTableFunction
public boolean isTableFunction()
Description copied from interface:AliasInfo
Return true if this alias is a Table Function.- Specified by:
isTableFunction
in interfaceAliasInfo
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readExternal
public void readExternal(java.io.ObjectInput in) throws java.io.IOException, java.lang.ClassNotFoundException
Read this object from a stream of stored objects.- Specified by:
readExternal
in interfacejava.io.Externalizable
- Parameters:
in
- read this.- Throws:
java.io.IOException
- thrown on errorjava.lang.ClassNotFoundException
- thrown on error
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writeExternal
public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException
Write this object to a stream of stored objects.- Specified by:
writeExternal
in interfacejava.io.Externalizable
- Parameters:
out
- write bytes here.- Throws:
java.io.IOException
- thrown on error
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getTypeFormatId
public int getTypeFormatId()
Get the formatID which corresponds to this class.- Specified by:
getTypeFormatId
in interfaceTypedFormat
- Returns:
- the formatID of this class
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toString
public java.lang.String toString()
This is used by dblook to reconstruct the UDT-specific parts of the ddl needed to recreate this alias.- Overrides:
toString
in classjava.lang.Object
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getMethodName
public java.lang.String getMethodName()
Description copied from interface:AliasInfo
Get the name of the static method that the alias represents at the source database. (Only meaningful for method aliases )- Specified by:
getMethodName
in interfaceAliasInfo
- Returns:
- The name of the static method that the alias represents at the source database.
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