1 XMLApe Architecture XMLApe Engine XMLApe Data Source XMLApe Data Source XMLApe GUI Figure 1.

1

XMLApe Architecture

XMLApeEngine

XMLApeData Source

XMLApeData Source

XMLApeGUI

Figure 1

2

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://xmlape.cc.gatech.edu/myflights" xmlns="http://xmlape.cc.gatech.edu/myflights" elementFormDefault="qualified">

<xsd:element name="flights"> <xsd:complexType> <xsd:sequence> <xsd:element ref="flight" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element>

<xsd:element name="flight" type="flightType"/>

<xsd:complexType name="flightType"> <xsd:sequence> <xsd:element name="airline" type="xsd:string" minOccurs="1" maxOccurs="1"/> <xsd:element name="from" type="xsd:string" minOccurs="1" maxOccurs="1"/> <xsd:element name="to" type="xsd:string" minOccurs="1" maxOccurs="1"/> </xsd:sequence> </xsd:complexType>

</xsd:schema>

EXAMPLE - Flights Schema

Figure 2

3

EXAMPLE - Flights Data

<?xml version="1.0"?><flights xmlns="http://xmlape.cc.gatech.edu/myflights" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlape.cc.gatech.edu/myflights myflights.xsd"> <flight> <airline>Delta</airline> <from>Atlanta</from> <to>Detroit</to> </flight> <flight> <airline>Delta</airline> <from>Detroit</from> <to>Atlanta</to> </flight> <flight> <airline>USAirways</airline> <from>New York</from> <to>Los Angeles</to> </flight></flights>

Figure 3

4

EXAMPLE - Car Rentals Schema

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://xmlape.cc.gatech.edu/myrental" xmlns="http://xmlape.cc.gatech.edu/myrental" elementFormDefault="qualified">

<xsd:element name="rentals"> <xsd:complexType> <xsd:sequence> <xsd:element ref="rental" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element>

<xsd:element name="rental" type="rentalType"/>

<xsd:complexType name="rentalType"> <xsd:sequence> <xsd:element name="company" type="xsd:string" minOccurs="1" maxOccurs="1"/> <xsd:element name="from" type="xsd:string" minOccurs="1" maxOccurs="1"/> <xsd:element name="to" type="xsd:string" minOccurs="1" maxOccurs="1"/> </xsd:sequence> </xsd:complexType>

</xsd:schema>

Figure 4

5

EXAMPLE - Car Rentals data

<?xml version="1.0"?><rentals xmlns="http://xmlape.cc.gatech.edu/myrental" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlape.cc.gatech.edu/myrental myrental.xsd"> <rental> <company>Avis</company> <from>Atlanta</from> <to>Atlanta</to> </rental> <rental> <company>Dollar</company> <from>Atlanta</from> <to>Athens</to> </rental> <rental> <company>Thrifty</company> <from>New York</from> <to>Hartford</to> </rental></rentals>

Figure 5

6

Start screen with s-buttons and empty XMLApe Query Form

CAR RENTAL

EVENT

FLIGHT

HOTEL

TRAIN

CRUISE

URL:

Figure 6

7

Query Schema

<?xml version="1.0" encoding="UTF-8"?><xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://xmlape.cc.gtri.gatech.edu/query" xmlns="http://xmlape.cc.gtri.gatech.edu/query" elementFormDefault="qualified">

<xsd:element name="query" type="queryType" />

<xsd:complexType name="queryType"> <xsd:sequence>

<xsd:element name="source" type="sourceType" minOccurs="0" maxOccurs="unbounded" /><xsd:element name="select" type="selectType" minOccurs="0" maxOccurs="unbounded" /><xsd:element name="join" type="joinType" minOccurs="0" maxOccurs="unbounded" />

</xsd:sequence> </xsd:complexType>

<xsd:complexType name="sourceType"> <xsd:sequence>

<xsd:element name="location" type="xsd:anyURI" minOccurs="1" maxOccurs="1" /><xsd:element name="alias" type="xsd:string" minOccurs="1" maxOccurs="1"/>


Figure 7

8

Query Schema (cont.)

<xsd:complexType name="selectType"> <xsd:sequence>

<xsd:element name="schemaRef" type="schemaRefType" minOccurs="1" maxOccurs="1"/><xsd:element name="value" type="xsd:string" minOccurs="1" maxOccurs="1"/>


<xsd:complexType name="joinType"> <xsd:sequence> <xsd:element name="schemaRef" type="schemaRefType" minOccurs="2" maxOccurs="unbounded" /> </xsd:sequence> </xsd:complexType>

<xsd:complexType name="schemaRefType"> <xsd:sequence>

<xsd:element name="alias" type="xsd:string" minOccurs="1" maxOccurs="1"/> 

<xsd:element name="field" type="xsd:string" minOccurs="1" maxOccurs="1"/> </xsd:sequence> </xsd:complexType>

</xsd:schema>

Figure 8

9

Empty Query Document

<?xml version="1.0" encoding="UTF-8"?><query xmlns="http://xmlape.cc.gtri.gatech.edu/query" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation= "http://xmlape.cc.gtri.gatech.edu/query query.xsd"></query>

Figure 9

10

Empty Query Result Schema<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="query1_results" xmlns="query1_results" elementFormDefault="qualified">

<xsd:element name="results"> <xsd:complexType> <xsd:sequence> <xsd:element ref="result" minOccurs="0" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> </xsd:element>

<xsd:element name="result" type="resultType"/>

<xsd:complexType name="resultType"> <xsd:sequence> </xsd:sequence> </xsd:complexType>

</xsd:schema>

Figure 10

11

Empty Query Result Data

<?xml version="1.0"?><results xmlns="query1_results" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="query1_results query1_results.xsd"></results>

Figure 11

12

XMLApe Query Form generated by the GUI from the XML schema in Figure 2

RENTAL

EVENT

FLIGHT

HOTEL

TRAIN

CRUISE

URL:

Figure 12

FLIGHT AIRLINE

FROM

TO

13

XMLApe Query Form; two FLIGHT schemas, Figure 2, and one RENTAL schema, Figure 4

RENTAL

EVENT

FLIGHT

HOTEL

TRAIN

CRUISE

URL:

Figure 13

FLIGHT AIRLINE

FROM

TO

FLIGHT AIRLINE

FROM

TO

RENTAL COMPANY

FROM

TO

14

3-source Query Document after Figure 13; no selections; no joins

<?xml version="1.0" encoding="UTF-8"?><query xmlns="http://xmlape.cc.gtri.gatech.edu/query" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation= "http://xmlape.cc.gtri.gatech.edu/query query.xsd">

<source>  <location>http://xmlape.cc.gatech.edu/myflights.datasource</location> <alias>myflights1</alias> </source>


<source>  <location>http://xmlape.cc.gatech.edu/myrental.datasource</location> <alias>myrental1</alias> </source>

</query>

Figure 14

15

Result Schema for 3-source query; no selections; no joins

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="query2_results" xmlns="query2_results" xmlns:myrental="http://xmlape.cc.gatech.edu/myrental" xmlns:myflights="http://xmlape.cc.gatech.edu/myflights" elementFormDefault="qualified"> <xsd:import namespace="http://xmlape.cc.gatech.edu/myrental" schemaLocation="myrental.xsd"/> <xsd:import namespace="http://xmlape.cc.gatech.edu/myflights" schemaLocation="myflights.xsd"/>



<xsd:complexType name="resultType"> <xsd:sequence> <xsd:element name="myflights1" type="myflights:flightType" minOccurs="1" maxOccurs="1"/> <xsd:element name="myflights2" type="myflights:flightType" minOccurs="1" maxOccurs="1"/> <xsd:element name="myrental1" type="myrental:rentalType" minOccurs="1" maxOccurs="1"/> </xsd:sequence> </xsd:complexType>

</xsd:schema>

Figure 15

16

Result Data for 3-source query;no selections; no joins

<?xml version="1.0"?><results xmlns="query2_results" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:myrental="http://xmlape.cc.gatech.edu/myrental" xmlns:myflights="http://xmlape.cc.gatech.edu/myflights" xsi:schemaLocation="query2_results query2_results.xsd">

<result> <myflights1> <myflights:airline>Delta</myflights:airline> <myflights:from>Atlanta</myflights:from> <myflights:to>Detroit</myflights:to> </myflights1> <myflights2> <myflights:airline>Delta</myflights:airline> <myflights:from>Atlanta</myflights:from> <myflights:to>Detroit</myflights:to> </myflights2> <myrental1> <myrental:company>Avis</myrental:company> <myrental:from>Atlanta</myrental:from> <myrental:to>Atlanta</myrental:to> </myrental1> </result>

Figure 16

17

Result Data for 3-source query;no selections; no joins (cont.)

25 more <result>’s …….and, finally, the last one:

<result> <myflights1> <myflights:airline>USAirways</myflights:airline> <myflights:from>New York</myflights:from> <myflights:to>Los Angeles</myflights:to> </myflights1> <myflights2> <myflights:airline>USAirways</myflights:airline> <myflights:from>New York</myflights:from> <myflights:to>Los Angeles</myflights:to> </myflights2> <myrental1> <myrental:company>Thrifty</myrental:company> <myrental:from>New York</myrental:from> <myrental:to>Hartford</myrental:to> </myrental1> </result>

</results>

Figure 17

18

Query w/selections and joins in the XMLApe Query Form

CAR

EVENT

FLIGHT

HOTEL

TRAIN

CRUISE

URL:

Figure 18

FLIGHT AIRLINE

DetroitFROM

TO

FLIGHT AIRLINE

FROM

TO

RENTAL COMPANY

FROM

TO

Surprise vacation:

Leaving Detroit flying somewhere. Picking up a rental from that place and returning it to the same place. Leaving that place flying somewhere else.

19

Query Document w/selections and joins corresponding to Figure 18





Figure 19

20

Query Document w/selections and joins (cont.)corresponding to Figure 18

<select> <schemaRef> <alias>myflights1</alias> <field>"XPath expression: flightType:from"</field> </schemaRef> <value>Detroit</value> </select>

<join> <schemaRef> <alias>myflights1</alias> <field>"XPath expression: flightType:to"</field> </schemaRef> <schemaRef> <alias>myflights2</alias> <field>"XPath expression: flightType:from"</field> </schemaRef> <schemaRef> <alias>myrental1</alias> <field>"XPath expression: myRental:from"</field> </schemaRef> <schemaRef> <alias>myrental1</alias> <field>"XPath expression: myRental:to"</field> </schemaRef> </join>

</query>

Figure 20

21

Schema for Result of query in Figure 19-20 <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="query3_results" xmlns="query3_results" xmlns:myrental="http://xmlape.cc.gatech.edu/myrental" xmlns:myflights="http://xmlape.cc.gatech.edu/myflights" elementFormDefault="qualified"> <xsd:import namespace="http://xmlape.cc.gatech.edu/myrental" schemaLocation="myrental.xsd"/> <xsd:import namespace="http://xmlape.cc.gatech.edu/myflights" schemaLocation="myflights.xsd"/>



<xsd:complexType name="resultType"> <xsd:sequence> <xsd:element name="myflights1" type="myflights:flightType" minOccurs="1" maxOccurs="1"/> <xsd:element name="myflights2" type="myflights:flightType" minOccurs="1" maxOccurs="1"/> <xsd:element name="myrental1" type="myrental:rentalType" minOccurs="1" maxOccurs="1"/> </xsd:sequence> </xsd:complexType>

</xsd:schema>

Figure 21

22

Result Data for query in Figure 19-20<?xml version="1.0"?><results xmlns="query3_results" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:myrental="http://xmlape.cc.gatech.edu/myrental" xmlns:myflights="http://xmlape.cc.gatech.edu/myflights" xsi:schemaLocation="query3_results query3_results.xsd">

<result> <myflights1> <myflights:airline>Delta</myflights:airline> <myflights:from>Detroit</myflights:from> <myflights:to>Atlanta</myflights:to> </myflights1> <myflights2> <myflights:airline>Delta</myflights:airline> <myflights:from>Atlanta</myflights:from> <myflights:to>Detroit</myflights:to> </myflights2> <myrental1> <myrental:company>Avis</myrental:company> <myrental:from>Atlanta</myrental:from> <myrental:to>Atlanta</myrental:to> </myrental1> </result>

</results>

Figure 22

23

Engine: Query Document breakdown (1 of 3) from Figure 19-20



<select> <schemaRef> <alias>myflights1</alias> <field>"XPath expression: flightType:from"</field> </schemaRef> <value>Detroit</value> </select>

</query>

Figure 23

24

Engine: Result Data for query in Figure 23

<?xml version="1.0"?><flights xmlns="http://xmlape.cc.gatech.edu/myflights" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlape.cc.gatech.edu/myflights myflights.xsd"> <flight> <airline>Delta</airline> <from>Detroit</from> <to>Atlanta</to> </flight></flights>

Figure 24

25




</query>

Figure 25

26

Engine: Result Data for query in Figure 25

<?xml version="1.0"?><flights xmlns="http://xmlape.cc.gatech.edu/myflights" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlape.cc.gatech.edu/myflights myflights.xsd"> <flight> <airline>Delta</airline> <from>Atlanta</from> <to>Detroit</to> </flight> <flight> <airline>Delta</airline> <from>Detroit</from> <to>Atlanta</to> </flight> <flight> <airline>USAirways</airline> <from>New York</from> <to>Los Angeles</to> </flight></flights>

Figure 26

27




<join> <schemaRef> <alias>myrental1</alias> <field>"XPath expression: myRental:from"</field> </schemaRef> <schemaRef> <alias>myrental1</alias> <field>"XPath expression: myRental:to"</field> </schemaRef> </join>

</query>

Figure 27

28

Engine: Result Data for query in Figure 27<?xml version="1.0"?><rentals xmlns="http://xmlape.cc.gatech.edu/myrental" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlape.cc.gatech.edu/myrental myrental.xsd"> <rental> <company>Avis</company> <from>Atlanta</from> <to>Atlanta</to> </rental></rentals>

Figure 28

29

Engine: Join Results from Figure 24-26-28 to get Result in Figure 22

<?xml version="1.0"?><results xmlns="query3_results" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:myrental="http://xmlape.cc.gatech.edu/myrental" xmlns:myflights="http://xmlape.cc.gatech.edu/myflights" xsi:schemaLocation="query3_results query3_results.xsd">

<result> <myflights1> <myflights:airline>Delta</myflights:airline> <myflights:from>Detroit</myflights:from> <myflights:to>Atlanta</myflights:to> </myflights1> <myflights2> <myflights:airline>Delta</myflights:airline> <myflights:from>Atlanta</myflights:from> <myflights:to>Detroit</myflights:to> </myflights2> <myrental1> <myrental:company>Avis</myrental:company> <myrental:from>Atlanta</myrental:from> <myrental:to>Atlanta</myrental:to> </myrental1> </result>

</results>

Figure 29

1 XMLApe Architecture XMLApe Engine XMLApe Data Source XMLApe Data Source XMLApe GUI Figure 1.

Documents

Transcript of 1 XMLApe Architecture XMLApe Engine XMLApe Data Source XMLApe Data Source XMLApe GUI Figure 1.