Package groovy.sql

Class ResultSetMetaDataWrapper

java.lang.Object

groovy.lang.GroovyObjectSupport

groovy.sql.ResultSetMetaDataWrapper

All Implemented Interfaces:

GroovyObject

public class ResultSetMetaDataWrapper
extends GroovyObjectSupport

This class defines a wrapper for accessing a specific column in ResultSetMetaData. This allows iteration over columns using idiomatic Groovy, e.g.:

 meta.each {col ->
   println col.columnName
 }
 

All ResultSetMetaData column methods taking a column index are available on a column either as a no-arg getter or via a property.

This wrapper is created by an iterator invoked for ResultSetMetaData.

See Also:

• SqlExtensions

Constructor Summary

Constructors

Constructor	Description
ResultSetMetaDataWrapper(ResultSetMetaData target, int index)	Creates a wrapper for a single metadata column.

Method Summary

Modifier and Type	Method	Description
Object	getProperty(String property)	Resolves a metadata property by invoking the corresponding getter for this wrapper's column.
Object	invokeMethod(String name, Object args)	Invokes a metadata method after prepending this wrapper's column index.
void	setProperty(String property, Object newValue)	Always rejects property writes because result-set metadata is read-only.

Methods inherited from class groovy.lang.GroovyObjectSupport

getMetaClass, setMetaClass

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ResultSetMetaDataWrapper

public ResultSetMetaDataWrapper(ResultSetMetaData target,
 int index)

Creates a wrapper for a single metadata column.

Parameters:

target - the metadata instance to wrap

index - the 1-based column index represented by this wrapper

Method Details

invokeMethod

public Object invokeMethod(String name,
 Object args)

Invokes a metadata method after prepending this wrapper's column index.

Parameters:

name - the metadata method name

args - the original method arguments

Returns:

the delegated result

getProperty

public Object getProperty(String property)

Resolves a metadata property by invoking the corresponding getter for this wrapper's column.

Parameters:

property - the property name

Returns:

the resolved property value

setProperty

public void setProperty(String property,
 Object newValue)

Always rejects property writes because result-set metadata is read-only.

Parameters:

property - the property name

newValue - the requested value