Estaba tratando de implementar la clasificación y desclasificación automáticas para los directorios OPDS en Java. Intenté usar Trang para generar archivos .xsd y luego generar clases Java usando el complemento maven JAXB2, pero los archivos XML Schema generados eran completamente inutilizables y JAXB2 produjo muchos errores. ¿Existen otras herramientas para generar clases Java a partir del esquema RELAX NG? ¿Alguna otra opción? ¿Qué estoy haciendo mal?
$ mvn compile [INFO] Scanning for projects... [INFO] [INFO] ----------------------------< net.uo1:opds >---------------------------- [INFO] Building opds 1.2 [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- jaxb2-maven-plugin:2.5.0:xjc (xjc) @ opds --- [INFO] Created EpisodePath [/home/m/tmp/opds-java/target/generated-sources/jaxb/META-INF/JAXB]: true [INFO] Ignored given or default xjbSources [/home/m/tmp/opds-java/src/main/xjb], since it is not an existent file or directory. [ERROR] file:/home/m/tmp/opds-java/src/main/xsd/opds.xsd [106,63] org.xml.sax.SAXParseException: derivation-ok-restriction.4.3: Error for type '#AnonType_price'. The process contents of the wildcard in the derivation (skip) is weaker than that in the base (lax). at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException (ErrorHandlerWrapper.java:204) at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error (ErrorHandlerWrapper.java:135) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError (XMLErrorReporter.java:396) at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.reportSchemaErr (XSDHandler.java:4254) at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.reportSchemaError (XSDHandler.java:4237) at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDAbstractTraverser.reportSchemaError (XSDAbstractTraverser.java:866) at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDComplexTypeTraverser.handleComplexTypeError (XSDComplexTypeTraverser.java:1182) at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDComplexTypeTraverser.traverseComplexTypeDecl (XSDComplexTypeTraverser.java:341) at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDComplexTypeTraverser.traverseLocal (XSDComplexTypeTraverser.java:164) at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDElementTraverser.traverseNamedElement (XSDElementTraverser.java:392) at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDElementTraverser.traverseGlobal (XSDElementTraverser.java:242) at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.traverseSchemas (XSDHandler.java:1483) at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.parseSchema (XSDHandler.java:663) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadSchema (XMLSchemaLoader.java:618) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadGrammar (XMLSchemaLoader.java:577) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadGrammar (XMLSchemaLoader.java:543) at com.sun.org.apache.xerces.internal.jaxp.validation.XMLSchemaFactory.newSchema (XMLSchemaFactory.java:281) at com.sun.tools.xjc.reader.xmlschema.parser.SchemaConstraintChecker.check (SchemaConstraintChecker.java:81) at com.sun.tools.xjc.ModelLoader.loadXMLSchema (ModelLoader.java:301) at com.sun.tools.xjc.ModelLoader.load (ModelLoader.java:121) at com.sun.tools.xjc.ModelLoader.load (ModelLoader.java:76) at com.sun.tools.xjc.Driver.run (Driver.java:324) at org.codehaus.mojo.jaxb2.javageneration.AbstractJavaGeneratorMojo.performExecution (AbstractJavaGeneratorMojo.java:475) at org.codehaus.mojo.jaxb2.AbstractJaxbMojo.execute (AbstractJaxbMojo.java:337) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305) at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192) at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105) at org.apache.maven.cli.MavenCli.execute (MavenCli.java:972) at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293) at org.apache.maven.cli.MavenCli.main (MavenCli.java:196) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:77) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke (Method.java:568) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282) at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406) at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347) [ERROR] file:/home/m/tmp/opds-java/src/main/xsd/atom.xsd [61,46] org.xml.sax.SAXParseException: cos-nonambig: WC[##other:"http://www.w3.org/2005/Atom"] and WC[##other:"http://www.w3.org/2005/Atom"] (or elements from their substitution group) violate "Unique Particle Attribution". During validation against this schema, ambiguity would be created for those two particles. at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException (ErrorHandlerWrapper.java:204) at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error (ErrorHandlerWrapper.java:135) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError (XMLErrorReporter.java:396) at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError (XMLErrorReporter.java:327) at com.sun.org.apache.xerces.internal.impl.xs.XSConstraints.reportSchemaError (XSConstraints.java:342) at com.sun.org.apache.xerces.internal.impl.xs.XSConstraints.fullSchemaChecking (XSConstraints.java:499) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadGrammar (XMLSchemaLoader.java:584) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadGrammar (XMLSchemaLoader.java:543) at com.sun.org.apache.xerces.internal.jaxp.validation.XMLSchemaFactory.newSchema (XMLSchemaFactory.java:281) at com.sun.tools.xjc.reader.xmlschema.parser.SchemaConstraintChecker.check (SchemaConstraintChecker.java:81) at com.sun.tools.xjc.ModelLoader.loadXMLSchema (ModelLoader.java:301) at com.sun.tools.xjc.ModelLoader.load (ModelLoader.java:121) at com.sun.tools.xjc.ModelLoader.load (ModelLoader.java:76) at com.sun.tools.xjc.Driver.run (Driver.java:324) at org.codehaus.mojo.jaxb2.javageneration.AbstractJavaGeneratorMojo.performExecution (AbstractJavaGeneratorMojo.java:475) at org.codehaus.mojo.jaxb2.AbstractJaxbMojo.execute (AbstractJaxbMojo.java:337) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156) at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305) at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192) at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105) at org.apache.maven.cli.MavenCli.execute (MavenCli.java:972) at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293) at org.apache.maven.cli.MavenCli.main (MavenCli.java:196) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:77) at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke (Method.java:568) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282) at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406) at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347) ... ~/projects/opds-java/src/main/xsd$ xjc opds.xsd parsing a schema... [ERROR] derivation-ok-restriction.4.3: Error for type '#AnonType_price'. The process contents of the wildcard in the derivation (skip) is weaker than that in the base (lax). line 106 of file:/home/m/tmp/opds-java/src/main/xsd/opds.xsd [ERROR] cos-nonambig: WC[##other:"http://www.w3.org/2005/Atom"] and WC[##other:"http://www.w3.org/2005/Atom"] (or elements from their substitution group) violate "Unique Particle Attribution". During validation against this schema, ambiguity would be created for those two particles. line 61 of file:/home/m/tmp/opds-java/src/main/xsd/atom.xsd [ERROR] cos-nonambig: WC[##other:"http://www.w3.org/2005/Atom"] and WC[##other:"http://www.w3.org/2005/Atom"] (or elements from their substitution group) violate "Unique Particle Attribution". During validation against this schema, ambiguity would be created for those two particles. line 83 of file:/home/m/tmp/opds-java/src/main/xsd/atom.xsd [ERROR] cos-element-consistent: Error for type '#AnonType_entry'. Multiple elements with name 'content', with different types, appear in the model group. line 107 of file:/home/m/tmp/opds-java/src/main/xsd/atom.xsd [ERROR] cos-nonambig: "http://www.w3.org/2005/Atom":content and "http://www.w3.org/2005/Atom":content (or elements from their substitution group) violate "Unique Particle Attribution". During validation against this schema, ambiguity would be created for those two particles. line 107 of file:/home/m/tmp/opds-java/src/main/xsd/atom.xsd [ERROR] cos-nonambig: WC[##other:"http://www.w3.org/2005/Atom"] and WC[##other:"http://www.w3.org/2005/Atom"] (or elements from their substitution group) violate "Unique Particle Attribution". During validation against this schema, ambiguity would be created for those two particles. line 255 of file:/home/m/tmp/opds-java/src/main/xsd/atom.xsd [ERROR] cos-nonambig: "http://opds-spec.org/2010/catalog":price and "http://opds-spec.org/2010/catalog":price (or elements from their substitution group) violate "Unique Particle Attribution". During validation against this schema, ambiguity would be created for those two particles. line 352 of file:/home/m/tmp/opds-java/src/main/xsd/atom.xsd [ERROR] cos-nonambig: WC[##any] and "http://opds-spec.org/2010/catalog":indirectAcquisition (or elements from their substitution group) violate "Unique Particle Attribution". During validation against this schema, ambiguity would be created for those two particles. line 84 of file:/home/m/tmp/opds-java/src/main/xsd/opds.xsd Failed to parse a schema. <?xml version="1.0" encoding="UTF-8"?> <!-- -*- rnc -*- RELAX NG Compact Syntax Grammar for OPDS Catalog Feed & Entry Documents Version 2018-08-16 --> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="http://opds-spec.org/2010/catalog" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:opds="http://opds-spec.org/2010/catalog" xmlns:atom="http://www.w3.org/2005/Atom"> <xs:import namespace="http://www.w3.org/1999/xhtml" schemaLocation="xhtml.xsd"/> <xs:import namespace="http://www.w3.org/2005/Atom" schemaLocation="atom.xsd"/> <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="xml.xsd"/> <!-- The OPDS Catalog spec extends Atom (RFC4287), and the additions require some patterns not used in the Atom schema. The first is atomUriExceptOPDS, which is used to describe an atomLink whose rel value is an atomNCName (no-colon name) or any URI other than these from OPDS Catalogs. In these cases, no opds:price element should appear. --> <xs:simpleType name="atomUriExceptOPDS"> <xs:restriction base="xs:string"/> </xs:simpleType> <!-- Next is OPDSUrisExceptBuy, which is used to describe an atomLink whose rel value is from OPDS Catalogs but is not ".../acquisition/buy". In such cases, an opds:price element is optional. --> <xs:simpleType name="OPDSUrisExceptBuy"> <xs:restriction base="xs:string"> <xs:enumeration value="http://opds-spec.org/acquisition/borrow"/> <xs:enumeration value="http://opds-spec.org/acquisition/subscribe"/> <xs:enumeration value="http://opds-spec.org/acquisition/sample"/> <xs:enumeration value="preview"/> </xs:restriction> </xs:simpleType> <!-- To simplify OPDS Catalog validation, we do not use Schematron to assert that any atom:link with a rel value of ".../acquisition/buy" must be accompanied by one or more opds:price elements. Instead we rely on Relax NG to describe one of three situations: - the rel value is ".../acquisition/buy" and at least one opds:price element is required - the rel value is ".../acquisition/borrow" or ".../acquisition/subscribe" or ".../acquisition/sample", in case opds:price elements may be included; or - the value of the rel attribute is any other URI or an Atom-defined no-colon name, and no opds:price element is permitted --> <!-- Note that this OPDS Catalog schema includes atom.rnc, so that schema must be present for validation. Note also that atom.rnc defines atomUri as text and not as xsd:anyURI, and so wherever the Atom spec requires an IRI, the schema will not check the value against any URI pattern or logic. The OPDS Catalog schema overrides atom.rnc to provide a relatively accurate test. With the approval of XSD 1.1, the schema definition should change to xsd:anyURI to match what the spec text says. --> <xs:attributeGroup name="undefinedAttribute"> <xs:anyAttribute namespace="##other" processContents="skip"/> </xs:attributeGroup> <!-- Here is where OPDS Catalogs use John Cowan's pragmatic evaluation of an IRI. This modifies xsd:anyURI in XSD 1.0 to exclude ASCII characters not valid in 1.1 or IRI's without being escaped. This matches the OPDS and Atom specs, but not the non-normative atom.rnc. --> <xs:simpleType name="atomUri"> <xs:restriction base="xs:anyURI"/> </xs:simpleType> <!-- Here we override Atom to account for HTML abuse in the summary element, restricting it in OPDS Catalog to text: --> <xs:group name="anyOPDSForeignElement"> <xs:sequence> <xs:any processContents="skip"/> </xs:sequence> </xs:group> <!-- An opds:indirectAcquisition should use strictly MIME media type for its type attribute --> <xs:element name="indirectAcquisition"> <xs:complexType> <xs:choice minOccurs="0" maxOccurs="unbounded"> <xs:group ref="opds:anyOPDSForeignElement"/> <xs:element ref="opds:indirectAcquisition"/> </xs:choice> <xs:attributeGroup ref="atom:atomCommonAttributes"/> <xs:attribute name="type" use="required" type="atom:atomMediaType"/> </xs:complexType> </xs:element> <!-- An opds:price element should not contain a currency symbol; it is restricted to non-negative decimal numbers. --> <xs:element name="price"> <xs:complexType> <xs:simpleContent> <xs:restriction base="xs:anyType"> <xs:simpleType> <xs:restriction base="xs:decimal"> <xs:minInclusive value="0.0"/> </xs:restriction> </xs:simpleType> <xs:attributeGroup ref="atom:atomCommonAttributes"/> <xs:attribute name="currencycode" use="required" type="opds:opdsPriceCurrencyCode"/> </xs:restriction> </xs:simpleContent> </xs:complexType> </xs:element> <!-- Instead of allowing every possible 3-letter combination as a currency code, here the permissible codes (as identified in ISO4217 as of 2018-08-16) are enumerated. Code for metals and 3-digit equivalents are excluded from this list. --> <xs:simpleType name="opdsPriceCurrencyCode"> <xs:restriction base="xs:token"> <xs:enumeration value="AED"/> <xs:enumeration value="AFN"/> <xs:enumeration value="ALL"/> <xs:enumeration value="AMD"/> <xs:enumeration value="ANG"/> <xs:enumeration value="AOA"/> <xs:enumeration value="ARS"/> <xs:enumeration value="AUD"/> <xs:enumeration value="AWG"/> <xs:enumeration value="AZN"/> <xs:enumeration value="BAM"/> <xs:enumeration value="BBD"/> <xs:enumeration value="BDT"/> <xs:enumeration value="BGN"/> <xs:enumeration value="BHD"/> <xs:enumeration value="BIF"/> <xs:enumeration value="BMD"/> <xs:enumeration value="BND"/> <xs:enumeration value="BOB"/> <xs:enumeration value="BOV"/> <xs:enumeration value="BRL"/> <xs:enumeration value="BSD"/> <xs:enumeration value="BTN"/> <xs:enumeration value="BWP"/> <xs:enumeration value="BYN"/> <xs:enumeration value="BZD"/> <xs:enumeration value="CAD"/> <xs:enumeration value="CDF"/> <xs:enumeration value="CHE"/> <xs:enumeration value="CHF"/> <xs:enumeration value="CHW"/> <xs:enumeration value="CLF"/> <xs:enumeration value="CLP"/> <xs:enumeration value="CNY"/> <xs:enumeration value="COP"/> <xs:enumeration value="COU"/> <xs:enumeration value="CRC"/> <xs:enumeration value="CUC"/> <xs:enumeration value="CUP"/> <xs:enumeration value="CVE"/> <xs:enumeration value="CZK"/> <xs:enumeration value="DJF"/> <xs:enumeration value="DKK"/> <xs:enumeration value="DOP"/> <xs:enumeration value="DZD"/> <xs:enumeration value="EGP"/> <xs:enumeration value="ERN"/> <xs:enumeration value="ETB"/> <xs:enumeration value="EUR"/> <xs:enumeration value="FJD"/> <xs:enumeration value="FKP"/> <xs:enumeration value="GBP"/> <xs:enumeration value="GEL"/> <xs:enumeration value="GHS"/> <xs:enumeration value="GIP"/> <xs:enumeration value="GMD"/> <xs:enumeration value="GNF"/> <xs:enumeration value="GTQ"/> <xs:enumeration value="GYD"/> <xs:enumeration value="HKD"/> <xs:enumeration value="HNL"/> <xs:enumeration value="HRK"/> <xs:enumeration value="HTG"/> <xs:enumeration value="HUF"/> <xs:enumeration value="IDR"/> <xs:enumeration value="ILS"/> <xs:enumeration value="INR"/> <xs:enumeration value="IQD"/> <xs:enumeration value="IRR"/> <xs:enumeration value="ISK"/> <xs:enumeration value="JMD"/> <xs:enumeration value="JOD"/> <xs:enumeration value="JPY"/> <xs:enumeration value="KES"/> <xs:enumeration value="KGS"/> <xs:enumeration value="KHR"/> <xs:enumeration value="KMF"/> <xs:enumeration value="KPW"/> <xs:enumeration value="KRW"/> <xs:enumeration value="KWD"/> <xs:enumeration value="KYD"/> <xs:enumeration value="KZT"/> <xs:enumeration value="LAK"/> <xs:enumeration value="LBP"/> <xs:enumeration value="LKR"/> <xs:enumeration value="LRD"/> <xs:enumeration value="LSL"/> <xs:enumeration value="LYD"/> <xs:enumeration value="MAD"/> <xs:enumeration value="MDL"/> <xs:enumeration value="MGA"/> <xs:enumeration value="MKD"/> <xs:enumeration value="MMK"/> <xs:enumeration value="MNT"/> <xs:enumeration value="MOP"/> <xs:enumeration value="MRU"/> <xs:enumeration value="MUR"/> <xs:enumeration value="MVR"/> <xs:enumeration value="MWK"/> <xs:enumeration value="MXN"/> <xs:enumeration value="MXV"/> <xs:enumeration value="MYR"/> <xs:enumeration value="MZN"/> <xs:enumeration value="NAD"/> <xs:enumeration value="NGN"/> <xs:enumeration value="NIO"/> <xs:enumeration value="NOK"/> <xs:enumeration value="NPR"/> <xs:enumeration value="NZD"/> <xs:enumeration value="OMR"/> <xs:enumeration value="PAB"/> <xs:enumeration value="PEN"/> <xs:enumeration value="PGK"/> <xs:enumeration value="PHP"/> <xs:enumeration value="PKR"/> <xs:enumeration value="PLN"/> <xs:enumeration value="PYG"/> <xs:enumeration value="QAR"/> <xs:enumeration value="RON"/> <xs:enumeration value="RSD"/> <xs:enumeration value="RUB"/> <xs:enumeration value="RWF"/> <xs:enumeration value="SAR"/> <xs:enumeration value="SBD"/> <xs:enumeration value="SCR"/> <xs:enumeration value="SDG"/> <xs:enumeration value="SEK"/> <xs:enumeration value="SGD"/> <xs:enumeration value="SHP"/> <xs:enumeration value="SLL"/> <xs:enumeration value="SOS"/> <xs:enumeration value="SRD"/> <xs:enumeration value="SSP"/> <xs:enumeration value="STN"/> <xs:enumeration value="SVC"/> <xs:enumeration value="SYP"/> <xs:enumeration value="SZL"/> <xs:enumeration value="THB"/> <xs:enumeration value="TJS"/> <xs:enumeration value="TMT"/> <xs:enumeration value="TND"/> <xs:enumeration value="TOP"/> <xs:enumeration value="TRY"/> <xs:enumeration value="TTD"/> <xs:enumeration value="TWD"/> <xs:enumeration value="TZS"/> <xs:enumeration value="UAH"/> <xs:enumeration value="UGX"/> <xs:enumeration value="USD"/> <xs:enumeration value="USN"/> <xs:enumeration value="UYI"/> <xs:enumeration value="UYU"/> <xs:enumeration value="UZS"/> <xs:enumeration value="VEF"/> <xs:enumeration value="VES"/> <xs:enumeration value="VND"/> <xs:enumeration value="VUV"/> <xs:enumeration value="WST"/> <xs:enumeration value="XAF"/> <xs:enumeration value="XAG"/> <xs:enumeration value="XAU"/> <xs:enumeration value="XBA"/> <xs:enumeration value="XBB"/> <xs:enumeration value="XBC"/> <xs:enumeration value="XBD"/> <xs:enumeration value="XCD"/> <xs:enumeration value="XDR"/> <xs:enumeration value="XOF"/> <xs:enumeration value="XPD"/> <xs:enumeration value="XPF"/> <xs:enumeration value="XPT"/> <xs:enumeration value="XSU"/> <xs:enumeration value="XTS"/> <xs:enumeration value="XUA"/> <xs:enumeration value="XXX"/> <xs:enumeration value="YER"/> <xs:enumeration value="ZAR"/> <xs:enumeration value="ZMW"/> <xs:enumeration value="ZWL"/> </xs:restriction> </xs:simpleType> <xs:attribute name="facetGroup"/> <xs:attribute name="activeFacet"> <xs:simpleType> <xs:restriction base="xs:token"> <xs:enumeration value="true"/> </xs:restriction> </xs:simpleType> </xs:attribute> </xs:schema>El esquema XML completo está disponible aquí . La fuente del proyecto está disponible en GitHub .