org.alfresco.util.schemacomp.model

Class AbstractDbObject

java.lang.Object

org.alfresco.util.schemacomp.model.AbstractDbObject

All Implemented Interfaces:

DbObject

Direct Known Subclasses:

Column, ForeignKey, Index, PrimaryKey, Schema, Sequence, Table

public abstract class AbstractDbObject
extends Object
implements DbObject

Useful base class for many, if not all the DbObject implementations.

Author:

Matt Ward

Field Summary

Fields

Modifier and Type	Field and Description
protected ComparisonUtils	comparisonUtils

Constructor Summary

Constructors

Constructor and Description
AbstractDbObject(DbObject parent, String name) Instantiate, giving the object a parent and a name.

Method Summary

Modifier and Type	Method and Description
void	diff(DbObject right, DiffContext ctx) Provides an implementation of DbObject.diff(DbObject, DiffContext).
protected void	doDiff(DbObject right, DiffContext ctx) Override this method to provide subclass specific diffing logic.
boolean	equals(Object obj)
String	getName() All items can be asked for their name, but it may be null.
DbObject	getParent() Get the parent object for which this object is a child.
String	getTypeName() Type name, e.g.
List<DbValidator>	getValidators() Retrieve the list of validators associated with this database object.
int	hashCode()
boolean	hasObjectLevelValidator() Is there at least one validator that assumes object-level validation that removes the requirement for reporting of differences for this object?
boolean	hasValidators() Does the database object have any validators associated with it?
boolean	sameAs(DbObject other) Are the two DbObjects logically the same? For example two Index objects may have different names, but are the same index as they both index the same columns for the same table.
void	setComparisonUtils(ComparisonUtils comparisonUtils) If a ComparisonUtils other than the default is required, then this setter can be used.
void	setName(String name)
void	setParent(DbObject parent) Sets the parent object.
void	setValidators(List<DbValidator> validators) Set/override the validators associated with this database object.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.alfresco.util.schemacomp.model.DbObject

accept

Field Detail

comparisonUtils

protected ComparisonUtils comparisonUtils

Constructor Detail

AbstractDbObject

public AbstractDbObject(DbObject parent,
                        String name)

Instantiate, giving the object a parent and a name.

Parameters:

parent - DbObject

name - String

Method Detail

getName

public String getName()

Description copied from interface: DbObject

All items can be asked for their name, but it may be null.

Specified by:

getName in interface DbObject

Returns:

the name

setName

public void setName(String name)

Parameters:

name - the name to set

sameAs

public boolean sameAs(DbObject other)

Description copied from interface: DbObject

Are the two DbObjects logically the same? For example two Index objects may have different names, but are the same index as they both index the same columns for the same table.

If two objects a and b have the same logical identity, it does not mean that a.equals(b) == true. The two objects may well have differences and will be flagged as such by the schema comparison tool. When a.sameAs(b) == true it makes it easier to show the differences as related, i.e. a and b are different rather than, a is only in the 'left' tree and b is only in the 'right' tree.

Specified by:

sameAs in interface DbObject

Parameters:

other - DbObject

Returns:

boolean

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

diff

public void diff(DbObject right,
                 DiffContext ctx)

Provides an implementation of DbObject.diff(DbObject, DiffContext). The template method doDiff(DbObject, DiffContext) provides the subclass specific diffing logic, whilst this method handles the workflow required in most cases: set the path's prefix that will be used to explain where differences occur; compare the name fields of the two objects; delegate to the subclass specific diffing (if any); remove the last path addition ready for the next object to perform its diff correctly.

Specified by:

diff in interface DbObject

Parameters:

right - The object to compare against.

ctx - The DiffContext

getParent

public DbObject getParent()

Description copied from interface: DbObject

Get the parent object for which this object is a child. If this is the root object then null should be returned.

Specified by:

getParent in interface DbObject

Returns:

Parent reference or null

setParent

public void setParent(DbObject parent)

Description copied from interface: DbObject

Sets the parent object.

Specified by:

setParent in interface DbObject

Parameters:

parent - DbObject

See Also:

DbObject.getParent()

doDiff

protected void doDiff(DbObject right,
                      DiffContext ctx)

Override this method to provide subclass specific diffing logic.

Parameters:

right - DbObject

ctx - DiffContext

setComparisonUtils

public void setComparisonUtils(ComparisonUtils comparisonUtils)

If a ComparisonUtils other than the default is required, then this setter can be used. Useful for testing, where a mock can be injected.

Parameters:

comparisonUtils - the comparisonUtils to set

getValidators

public List<DbValidator> getValidators()

Description copied from interface: DbObject

Retrieve the list of validators associated with this database object.

Specified by:

getValidators in interface DbObject

Returns:

DbValidator List

See Also:

DbValidator

setValidators

public void setValidators(List<DbValidator> validators)

Description copied from interface: DbObject

Set/override the validators associated with this database object.

Specified by:

setValidators in interface DbObject

Parameters:

validators - the validators to set

hasValidators

public boolean hasValidators()

Description copied from interface: DbObject

Does the database object have any validators associated with it?

Specified by:

hasValidators in interface DbObject

Returns:

true if there are one or more validators.

hasObjectLevelValidator

public boolean hasObjectLevelValidator()

Description copied from interface: DbObject

Is there at least one validator that assumes object-level validation that removes the requirement for reporting of differences for this object?

Specified by:

hasObjectLevelValidator in interface DbObject

Returns:

boolean

getTypeName

public String getTypeName()

Description copied from interface: DbObject

Type name, e.g. "column", "foreign key"

Specified by:

getTypeName in interface DbObject

Returns:

String