easik.sketch.util.Export
Class ExportHandler

java.lang.Object
  org.xml.sax.helpers.DefaultHandler
      easik.sketch.util.Export.ExportHandler

All Implemented Interfaces:

org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler

public class ExportHandler
extends org.xml.sax.helpers.DefaultHandler

A class to parse XML specifically for database and SQL file generation. Should not be used for any other purpose, as it does not contain any graphical information.

Since:

2006-05-18 Vera Ranieri

Version:

2006-06-27 Vera Ranieri

Author:

Vera Ranieri

Field Summary

private java.util.ArrayList<ExportConstraint>	_constraints A list of all constraints found in the XML file.
private int	_count A count maintained to ensure that each procedure has a unique identifier
private ExportConstraint	_curConstraint The current constraint
private java.lang.String	_curDatatype The current datatype
private ExportPath	_curPath The current path
private ExportUniqueKey	_curUniqueKey The current unique key
private java.util.HashMap<java.lang.String,java.lang.String>	_datatypes A hashmap of all data types found in the XML file.
private java.util.HashMap<java.lang.String,ExportEdge>	_edges HashMap of all edges to add to paths.
private ExportTable	_newTable The current table being added to the database
private java.util.HashMap<java.lang.String,ExportPath>	_paths HashMap of all paths in the sketch.
private java.lang.String	_platform The database platform to export to
private java.util.HashMap<java.lang.String,ExportTable>	_tables A HashMap of all the tables of the graph.

Constructor Summary

ExportHandler(java.lang.String platform)
Create a new instance of a SQLHandler and initialize all fields.

Method Summary

void	endElement(java.lang.String uri, java.lang.String localName, java.lang.String qName) Overloaded method from the extended default handler.
java.util.ArrayList<ExportConstraint>	getConstraints() Gets the constraints associated with a XML sketch
java.lang.String	getPlatform() Gets the platform of the database.
ExportTable	getTable(java.lang.String name) Gets the table associated with a given entity name
java.util.HashMap<java.lang.String,ExportTable>	getTables() Getter method for the HashMap of all tables to be created.
void	startElement(java.lang.String namespace, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes atts) Overloaded method from the extended Default Handler

Methods inherited from class org.xml.sax.helpers.DefaultHandler

characters, endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Field Detail

_tables

private java.util.HashMap<java.lang.String,ExportTable> _tables

A HashMap of all the tables of the graph. Indexed by the name of the table.

_platform

private java.lang.String _platform

The database platform to export to

_newTable

private ExportTable _newTable

The current table being added to the database

_curPath

private ExportPath _curPath

The current path

_curConstraint

private ExportConstraint _curConstraint

The current constraint

_curUniqueKey

private ExportUniqueKey _curUniqueKey

The current unique key

_curDatatype

private java.lang.String _curDatatype

The current datatype

_edges

private java.util.HashMap<java.lang.String,ExportEdge> _edges

HashMap of all edges to add to paths. Indexed by the name of the edge

_paths

private java.util.HashMap<java.lang.String,ExportPath> _paths

HashMap of all paths in the sketch. Indexed by the name of the path

_constraints

private java.util.ArrayList<ExportConstraint> _constraints

A list of all constraints found in the XML file.

_datatypes

private java.util.HashMap<java.lang.String,java.lang.String> _datatypes

A hashmap of all data types found in the XML file. Indexed by the description of the type

_count

private int _count

A count maintained to ensure that each procedure has a unique identifier

Constructor Detail

ExportHandler

public ExportHandler(java.lang.String platform)

Create a new instance of a SQLHandler and initialize all fields.

Parameters:

platform - The string representation of the user chosen platform.

Since:

2006-05-18 Vera Ranieri

Method Detail

getPlatform

public java.lang.String getPlatform()

Gets the platform of the database.

Returns:

The platform name

Since:

2006-05-18, Vera Ranieri

getTables

public java.util.HashMap<java.lang.String,ExportTable> getTables()

Getter method for the HashMap of all tables to be created. (ie all entities in XML and their properties)

Returns:

The tables of the XML

Since:

2006-05-18 Vera Ranieri

getTable

public ExportTable getTable(java.lang.String name)

Gets the table associated with a given entity name

Parameters:

name - The name of the table

Returns:

The SQLTable associated with that name

Since:

2006-05-18, Vera Ranieri

getConstraints

public java.util.ArrayList<ExportConstraint> getConstraints()

Gets the constraints associated with a XML sketch

Returns:

ArrayList of all constraints

Since:

2006-05-23, Vera Ranieri

startElement

public void startElement(java.lang.String namespace,
                         java.lang.String localName,
                         java.lang.String qName,
                         org.xml.sax.Attributes atts)

Overloaded method from the extended Default Handler

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

startElement in class org.xml.sax.helpers.DefaultHandler

Parameters:

namespace - @see org.xml.sax.helpers.DefaultHandler

localName - @see org.xml.sax.helpers.DefaultHandler

qName - @see org.xml.sax.helpers.DefaultHandler

atts - @see org.xml.sax.helpers.DefaultHandler

Since:

2006-05-18, Vera Ranieri

See Also:

DefaultHandler

endElement

public void endElement(java.lang.String uri,
                       java.lang.String localName,
                       java.lang.String qName)

Overloaded method from the extended default handler.

Specified by:

endElement in interface org.xml.sax.ContentHandler

Overrides:

endElement in class org.xml.sax.helpers.DefaultHandler

Parameters:

uri -

localName -

qName -

Since:

2006-05-23, Vera Ranieri

See Also:

DefaultHandler