xml - Uniqueness in XSD or DTD with namespaces -

-

i need create rules in .xsd or .dtd these cases:

  1. the name of songs can't repeated. (i not sure if did in code, please check)
  2. the elements comments , genre can optional, rest of them required. (i not sure if did in code, please check)
  3. there 3 types of values element genre, pop, rock , jazz. (i sure did in code, please check)

this code, getting errors http://www.xmlvalidation.com/ in xml document:

7:  60  attribute "xmlns" must declared element type "catalog". 7:  60  attribute "xmlns:xsi" must declared element type "catalog". 7:  60  attribute "xsi:schemalocation" must declared element type "catalog".

catalog.xml

<?xml version="1.0" encoding="utf-8"?>  <!doctype catalog system "catalog.dtd"> <catalog  xmlns="http://www.w3schools.com"  xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"  xsi:schemaloc ation="http://www.w3schools.com catalog.xsd">  <song>     <name2>bed of roses</name2>     <artist>bon jovi</artist>     <album>cross road</album>     <year>1995</year>     <genre>rock</genre>     <comments>good song</comments>     <path>c://music/bon jovi</path> </song> <song>     <name2>fly away here</name2>     <artist>aerosmith</artist>     <album>just push play</album>     <year>2001</year>     <genre>rock</genre>     <comments>good song</comments>     <path>c://music/aerosmith</path> </song> <song>     <name2>jossie</name2>     <artist>blink 182</artist>     <album>blink 182</album>     <year>2001</year>     <genre>pop</genre>     <comments>good song</comments>     <path>c://music/blink 182</path> </song> <song>     <name2>want bad</name2>     <artist>the offspring</artist>     <album>conspiracy of one</album>     <year>2000</year>     <genre>pop</genre>     <comments>good song</comments>     <path>c://music/the offspring</path> </song> <song>     <name2>the 1 love</name2>     <artist>air supply</artist>     <album>the 1 love</album>     <year>1981</year>     <genre>pop</genre>     <comments>good song</comments>     <path>c://music/air supply</path> </song>  </catalog>

catalog.dtd

<?xml version="1.0" encoding="utf-8"?> <!element catalog (song+)> <!element song (name2,artist,album,year,genre,comments,path)> <!element name (#pcdata)> <!element name2 (#pcdata)> <!element artist (#pcdata)> <!element album (#pcdata)> <!element year (#pcdata)> <!element genre (#pcdata)> <!element comments (#pcdata)> <!element path (#pcdata)>

catalog.xsd

<?xml version="1.0"?> <xs:schema xmlns:xs="http://www.w3.org/2001/xmlschema"  targetnamespace="http://www.w3schools.com" xmlns="http://www.w3schools.com"  elementformdefault="qualified">  <xs:element name="catalog"> <xs:complextype>     <xs:sequence>         <xs:element name="song" maxoccurs="5">             <xs:complextype>                 <xs:sequence>                   <xs:element name="name2" minoccurs="1"type="xs:string"/>                   <xs:element name="artist" minoccurs="1" type="xs:string"/>                   <xs:element name="album" minoccurs="1" type="xs:string"/>                   <xs:element name="year" minoccurs="1" type="xs:integer"/>                   <xs:element name="genre" minoccurs="0">                         <xs:simpletype>                                 <xs:restriction base="xs:string">                                     <xs:enumeration value="pop"/>                                     <xs:enumeration value="rock"/>                                     <xs:enumeration value="jazz"/>                                 </xs:restriction>                         </xs:simpletype>                   </xs:element>                                      <xs:element name="comments" minoccurs="0" type="xs:string"/>                   <xs:element name="path" minoccurs="1" type="xs:string"/>                 </xs:sequence>             </xs:complextype>         </xs:element>     </xs:sequence> </xs:complextype> </xs:element> </xs:schema>

  1. the name of songs cant repeated. (i not sure if did in code, please check)

yes, because maxoccurs defaults 1. (the default values minoccurs , maxoccurs 1.)

update: force contents of name2 unique within catalog, use xs:unique shown in xsd below. then, if, there 2 name2 elements "bed of roses" content, you'll receive error such following:

[error] catalog.xml:17:32: cvc-identity-constraint.4.1: duplicate unique value [bed of roses] declared identity constraint "catalog-song-name2-unique" of element "catalog".

next question:

  1. the elements comments , genre can optional, rest of them required. (i not sure if did in code, please check)

yes, because comments , genre have minoccurs="0" , rest have minoccurs="1".

  1. there 3 types of values element genre, pop, rock , jazz.(i sure did in code, please check)

correct.

now, regarding errors:

dtds not compatible xml namespaces without unnatural contortions.

recommend drop dtd , go xsd.

then, xml without doctype line , minor syntactical correction (delete space in xsi:schemaloc ation),

<?xml version="1.0" encoding="utf-8"?> <catalog      xmlns="http://www.w3schools.com"      xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"      xsi:schemalocation="http://www.w3schools.com catalog.xsd">    <song>     <name2>bed of roses</name2>     <artist>bon jovi</artist>     <album>cross road</album>     <year>1995</year>     <genre>rock</genre>     <comments>good song</comments>     <path>c://music/bon jovi</path>   </song>   <song>     <name2>fly away here</name2>     <artist>aerosmith</artist>     <album>just push play</album>     <year>2001</year>     <genre>rock</genre>     <comments>good song</comments>     <path>c://music/aerosmith</path>   </song>   <song>     <name2>jossie</name2>     <artist>blink 182</artist>     <album>blink 182</album>     <year>2001</year>     <genre>pop</genre>     <comments>good song</comments>     <path>c://music/blink 182</path>   </song>   <song>     <name2>want bad</name2>     <artist>the offspring</artist>     <album>conspiracy of one</album>     <year>2000</year>     <genre>pop</genre>     <comments>good song</comments>     <path>c://music/the offspring</path>   </song>   <song>     <name2>the 1 love</name2>     <artist>air supply</artist>     <album>the 1 love</album>     <year>1981</year>     <genre>pop</genre>     <comments>good song</comments>     <path>c://music/air supply</path>   </song>  </catalog>

will valid against xsd (again, minor syntactical correction: add space before type in declaration of name2):

update: demonstrates xs:unique name2:

<?xml version="1.0"?> <xs:schema xmlns:xs="http://www.w3.org/2001/xmlschema"            targetnamespace="http://www.w3schools.com"            xmlns:w3="http://www.w3schools.com"            elementformdefault="qualified">    <xs:element name="catalog">     <xs:complextype>       <xs:sequence>         <xs:element name="song" maxoccurs="5">           <xs:complextype>             <xs:sequence>               <xs:element name="name2" minoccurs="1" type="xs:string"/>               <xs:element name="artist" minoccurs="1" type="xs:string"/>               <xs:element name="album" minoccurs="1" type="xs:string"/>               <xs:element name="year" minoccurs="1" type="xs:integer"/>               <xs:element name="genre" minoccurs="0">                 <xs:simpletype>                   <xs:restriction base="xs:string">                     <xs:enumeration value="pop"/>                     <xs:enumeration value="rock"/>                     <xs:enumeration value="jazz"/>                   </xs:restriction>                 </xs:simpletype>               </xs:element>                                    <xs:element name="comments" minoccurs="0" type="xs:string"/>               <xs:element name="path" minoccurs="1" type="xs:string"/>             </xs:sequence>           </xs:complextype>         </xs:element>       </xs:sequence>     </xs:complextype>     <xs:unique name="catalog-song-name2-unique">       <xs:selector xpath="w3:song"/>       <xs:field xpath="w3:name2"/>     </xs:unique>   </xs:element> </xs:schema>

Comments

Post a Comment

Popular posts from this blog

node.js - Mongoose: Cast to ObjectId failed for value on newly created object after setting the value -

-
this question has answer here: what's mongoose error cast objectid failed value xxx @ path “_id”? 7 answers even though has been asked many times because entity has no valid objectid field. i came across situation objectid set value can casted objectid still error. the schema: var serviceschema = parammongoose.schema({ servicename:{ type: parammongoose.schema.types.objectid , ref: 'servicenames',required:true } }); pseudo code: servicefromdb=new service({servicename:'some name'}); servicefromdb.servicename='000000000000000000000001'; servicefromdb.save(function(paramerror,paramdata){ if(paramerror){ console.log('but but...',servicefromdb,paramerror) } }); the output of code is: but but... { servicename: 000000000000000000000001, _id: 55079a90286f49280364f78b } { [casterror: cast objectid faile...
Read more

gradle error "Cannot convert the provided notation to a File or URI" -

-
i have defined 2 system properties in gradle.properties: systemprop.builddir=build systemprop.cfgdir=build\\cfg and have following task defined in build.gradle: task clean(group:'clean',description:'clean project') << { ant.sequential { delete(dir: system.properties.builddir) mkdir(dir: system.properties.builddir) delete(dir: system.properties.cfgdir) mkdir(dir: system.properties.cfgdir) } } this generates following error: execution failed task ':clean'. > cannot convert provided notation file or uri: {dir=build}. following types/formats supported: - string or charsequence path, e.g 'src/main/java' or '/usr/include' - string or charsequence uri, e.g 'file:/usr/include' - file instance. - uri or url instance. but equivalent block of code not generate error , works expected: task clean(group:'clean',description:'clean project') << { ...
Read more

python - NameError: name 'subprocess' is not defined -

-
i'm trying make rng website: http://jamesdotcom.com/?p=417 . when run following code: captureimage = subprocess.popen( [ "fswebcam", "-r", "356x292", "-d", "/dev/video0", "static.jpg", "--skip", "10" ], stdout=devnull, stderr=devnull) captureimage.communicate() i following error message: nameerror: name 'subprocess' not defined what should do? thanks have imported first? import subprocess captureimage = subprocess.popen(["fswebcam", ...) subprocess included in python standard library since python 2.4. should not necessary install it.
Read more