org.alfresco.util.schemacomp.model

Class Schema

java.lang.Object

org.alfresco.util.schemacomp.model.AbstractDbObject

org.alfresco.util.schemacomp.model.Schema

All Implemented Interfaces:

java.lang.Iterable, DbObject

public class Schema
extends AbstractDbObject
implements java.lang.Iterable

Instances of this class represent a database schema.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.String	dbPrefix
protected java.util.List	objects
protected int	version

Fields inherited from class org.alfresco.util.schemacomp.model.AbstractDbObject

comparisonUtils

Constructor Summary

Constructors

Constructor and Description
Schema(java.lang.String name) Construct a schema with the given name and no database prefix.
Schema(java.lang.String name, java.lang.String dbPrefix, int schemaVersion) Construct a schema with the given name and database prefix.

Method Summary

Methods

Modifier and Type	Method and Description
void	accept(DbObjectVisitor visitor) Allows a visitor to be invoked against this DbObject.
void	add(DbObject dbObject) Add an object to this schema - this method will set this schema as the object's parent.
boolean	contains(DbObject object)
boolean	containsByName(java.lang.String name)
protected void	doDiff(DbObject right, DiffContext ctx) Override this method to provide subclass specific diffing logic.
boolean	equals(java.lang.Object obj)
java.lang.String	getDbPrefix()
int	getVersion()
int	hashCode()
java.util.Iterator	iterator()
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.

Methods inherited from class org.alfresco.util.schemacomp.model.AbstractDbObject

diff, getName, getParent, getTypeName, getValidators, hasObjectLevelValidator, hasValidators, setComparisonUtils, setName, setParent, setValidators, toString

Methods inherited from class java.lang.Object

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

Field Detail

objects

protected final java.util.List objects

dbPrefix

protected final java.lang.String dbPrefix

version

protected final int version

Constructor Detail

Schema

public Schema(java.lang.String name)

Construct a schema with the given name and no database prefix.

Parameters:

name -

Schema

public Schema(java.lang.String name,
      java.lang.String dbPrefix,
      int schemaVersion)

Construct a schema with the given name and database prefix. The database prefix specifies what filtering applies to the high-level (tables and sequences) objects in the schema. If for example dbPrefix is "alf_" then only tables and sequences whose names begin with "alf_" will be represented by this schema. Therefore any comparisons should be performed against another similarly filtered Schema object.

Parameters:

name -

dbPrefix -

Method Detail

add

public void add(DbObject dbObject)

Add an object to this schema - this method will set this schema as the object's parent.

Parameters:

dbObject -

iterator

public java.util.Iterator iterator()

Specified by:

iterator in interface java.lang.Iterable

contains

public boolean contains(DbObject object)

Parameters:

identifier -

Returns:

getDbPrefix

public java.lang.String getDbPrefix()

Returns:

the dbPrefix

getVersion

public int getVersion()

Returns:

the version

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractDbObject

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class AbstractDbObject

doDiff

protected void doDiff(DbObject right,
          DiffContext ctx)

Description copied from class: AbstractDbObject

Override this method to provide subclass specific diffing logic.

Overrides:

doDiff in class AbstractDbObject

accept

public void accept(DbObjectVisitor visitor)

Description copied from interface: DbObject

Allows a visitor to be invoked against this DbObject. Implementations should ensure that child objects are visited first (by calling accept on them) before invoking the visitor on itself.

Specified by:

accept in interface DbObject

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

Overrides:

sameAs in class AbstractDbObject

Returns:

containsByName

public boolean containsByName(java.lang.String name)