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PDF/UA. Fixing metadata. Extension schema
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@MaximPlusov @bdoubrov
MaximPlusov authored and bdoubrov committed Feb 1, 2024
1 parent b03464c commit e1d00c5
Showing 1 changed file with 61 additions and 4 deletions.
65 changes: 61 additions & 4 deletions metadata-fixer/src/main/java/org/verapdf/metadata/fixer/gf/impl/model/MetadataImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,8 @@

import org.verapdf.xmp.XMPConst;
import org.verapdf.xmp.XMPException;
import org.verapdf.xmp.impl.VeraPDFMeta;
import org.verapdf.xmp.XMPMetaFactory;
import org.verapdf.xmp.impl.*;
import org.verapdf.as.ASAtom;
import org.verapdf.as.io.ASMemoryInStream;
import org.verapdf.cos.*;
Expand All @@ -37,7 +38,6 @@
import org.verapdf.pdfa.flavours.PDFAFlavour;
import org.verapdf.pdfa.results.MetadataFixerResult;
import org.verapdf.pdfa.results.MetadataFixerResultImpl;
import org.verapdf.xmp.impl.VeraPDFXMPNode;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
Expand All @@ -62,6 +62,9 @@ public class MetadataImpl implements Metadata {
private static final String REMOVE_PROPERTY_MESSAGE = "Removed property '%s' from Identification schema";
private static final String SET_PROPERTY_MESSAGE = "Set property '%s' value to '%s' in Identification schema";

private static final String INTERNAL = "internal";
private static final String TEXT = "Text";
private static final String INTEGER = "Integer";

private final VeraPDFMeta metadata;
private final COSObject stream;
Expand Down Expand Up @@ -145,9 +148,11 @@ public void removePDFUAIdentificationSchema(MetadataFixerResultImpl.Builder resu
public void addPDFIdentificationSchema(MetadataFixerResultImpl.Builder resultBuilder, PDFAFlavour flavour) {
if (PDFAFlavour.IsoStandardSeries.ISO_14289.equals(flavour.getPart().getSeries())) {
addPDFUAIdentificationSchema(resultBuilder, flavour);
// checkAndFixPDFUAPrefixes(resultBuilder, flavour);
updateExtensionSchema(resultBuilder, flavour);
} else {
addPDFAIdentificationSchema(resultBuilder, flavour);
checkAndFixPDFAPrefixes(resultBuilder, flavour);
// checkAndFixPDFAPrefixes(resultBuilder, flavour);
}
fixRevProperty(resultBuilder, flavour);
}
Expand Down Expand Up @@ -189,19 +194,71 @@ private void fixPropertyPrefix(MetadataFixerResultImpl.Builder resultBuilder, St
}
}

private boolean hasProperty(String propertyName, String schemaId) {
return this.metadata.getProperty(schemaId, propertyName) != null;
}

public void addPDFUAIdentificationSchema(MetadataFixerResultImpl.Builder resultBuilder, PDFAFlavour flavour) {
try {
if (!XMPMetaFactory.getSchemaRegistry().getNamespaces().containsKey(XMPConst.NS_PDFUA_ID)) {
XMPMetaFactory.getSchemaRegistry().registerNamespace(XMPConst.NS_PDFUA_ID, VeraPDFMeta.PDFUAID_PREFIX, false);
}
int part = flavour.getPart().getPartNumber();
if (!Objects.equals(this.metadata.getPDFUAIdentificationPart(), part)) {
resultBuilder.addFix(String.format(this.metadata.getPDFUAIdentificationPart() == null ?
ADD_PROPERTY_MESSAGE : SET_PROPERTY_MESSAGE, VeraPDFMeta.PART, part));
this.metadata.setPDFUAIdentificationPart(part);
this.metadata.setPDFUAIdentificationPart(part);
this.setNeedToBeUpdated(true);
}
} catch (XMPException e) {
LOGGER.log(Level.FINE, "Can not obtain identification fields.", e);
}
}

public void updateExtensionSchema(MetadataFixerResultImpl.Builder resultBuilder, PDFAFlavour flavour) {
try {
VeraPDFExtensionSchemasContainer extension = metadata.getExtensionSchema();
if (extension == null) {
metadata.createExtensionSchema();
extension = metadata.getExtensionSchema();
resultBuilder.addFix("Added extension schema");
this.setNeedToBeUpdated(true);
}
VeraPDFExtensionSchemaDefinition extensionSchemaDefinition = VeraPDFExtensionSchemaDefinition.createExtensionSchemaDefinitionNode(
"PDF/UA Universal Accessibility Schema", XMPConst.NS_PDFUA_ID, VeraPDFMeta.PDFUAID_PREFIX);
boolean flag = false;
if (flavour == PDFAFlavour.PDFUA_1) {
flag |= addPropertyDefinition(resultBuilder, extension, extensionSchemaDefinition, VeraPDFMeta.PDFUAID_PREFIX,
XMPConst.NS_PDFUA_ID, VeraPDFMeta.AMD, TEXT, INTERNAL, "PDF/UA amendment identifier");
flag |= addPropertyDefinition(resultBuilder, extension, extensionSchemaDefinition, VeraPDFMeta.PDFUAID_PREFIX,
XMPConst.NS_PDFUA_ID, VeraPDFMeta.CORR, TEXT, INTERNAL, "PDF/UA corrigenda identifier");
} else if (flavour == PDFAFlavour.PDFUA_2) {
flag |= addPropertyDefinition(resultBuilder, extension, extensionSchemaDefinition, VeraPDFMeta.PDFUAID_PREFIX,
XMPConst.NS_PDFUA_ID, VeraPDFMeta.REVISION_YEAR, INTEGER, INTERNAL,
"Four-digit year of the date of publication or revision");
}
flag |= addPropertyDefinition(resultBuilder, extension, extensionSchemaDefinition, VeraPDFMeta.PDFUAID_PREFIX,
XMPConst.NS_PDFUA_ID, VeraPDFMeta.PART, INTEGER, INTERNAL, "PDF/UA version identifier");
if (flag) {
extension.addExtensionSchemaDefinition(extensionSchemaDefinition);
this.setNeedToBeUpdated(true);
}
} catch (XMPException e) {
LOGGER.log(Level.FINE, "Can not obtain extension schema.", e);
}
}

private boolean addPropertyDefinition(MetadataFixerResultImpl.Builder resultBuilder, VeraPDFExtensionSchemasContainer extension,
VeraPDFExtensionSchemaDefinition extensionSchemaDefinition, String propertyPrefix,
String schemaId, String propertyName, String valueType, String category, String description) throws XMPException {
if (hasProperty(propertyName, schemaId) && extension.getPropertyDefinition(schemaId, propertyPrefix, propertyName) == null) {
resultBuilder.addFix("Added property '" + propertyPrefix + ":" + propertyName + "' definition into extension schema");
extensionSchemaDefinition.addExtensionSchemaProperty(VeraPDFExtensionSchemaProperty.createPropertyDefinitionNode(propertyName,
valueType, category, description));
return true;
}
return false;
}

public void addPDFAIdentificationSchema(MetadataFixerResultImpl.Builder resultBuilder, PDFAFlavour flavour) {
int part = flavour.getPart().getPartNumber();
Expand Down

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