/**
* Reads line by line and creates new entities
*
* @throws IOException
* @throws IfcNotFoundException
* @throws IfcParserException
*/
public List<IfcEntity> parseEntities(
IfcLineReader reader, IfcSchema schema, boolean isHeaderSection, boolean ignoreUnknownTypes)
throws IOException, IfcNotFoundException, IfcParserException {
this.schema = schema;
this.reader = reader;
List<IfcEntity> entities = new ArrayList<>();
String statement;
String[] tokens;
//
// getting entity headers
//
while ((statement = reader.getNextStatement()) != null) {
IfcEntity entity;
String entityAttributesString;
if (!isHeaderSection) {
tokens = RegexUtils.split2(statement, IfcVocabulary.StepFormat.LINE_NUMBER);
if (tokens.length != 2) {
continue;
}
tokens = RegexUtils.split2(tokens[1], IfcVocabulary.StepFormat.EQUAL);
//
// create entity
//
long lineNumber = Long.parseLong(tokens[0].trim());
entity = getEntity(lineNumber);
entityAttributesString = tokens[1].trim();
} else {
entity = new IfcEntity(0);
entityAttributesString = statement;
}
//
// set entity type
//
int indexOfOpeningBracket = entityAttributesString.indexOf(StringUtils.OPENING_ROUND_BRACKET);
String entityTypeInfoName = entityAttributesString.substring(0, indexOfOpeningBracket).trim();
IfcEntityTypeInfo entityTypeInfo;
try {
entityTypeInfo = schema.getEntityTypeInfo(entityTypeInfoName);
} catch (IfcNotFoundException e) {
if (ignoreUnknownTypes) {
continue;
} else {
throw e;
}
}
entity.setTypeInfo(entityTypeInfo);
entityAttributesString =
entityAttributesString.substring(
indexOfOpeningBracket + 1, entityAttributesString.length() - 1);
List<IfcAttributeInfo> attributeInfos = entityTypeInfo.getInheritedAttributeInfos();
//
// parse attribute string to get attribute values
//
List<IfcValue> attributeValues =
parseAttributeValues(
new StrBuilderWrapper(entityAttributesString), entity, attributeInfos, null, null);
setEntityAttributeValues(entity, attributeInfos, attributeValues);
//
// add entity to the model
//
entities.add(entity);
}
if (!isHeaderSection) {
for (IfcEntity entity : entities) {
entity.bindInverseLinks();
}
}
return entities;
}
/**
* Set entity attribute values
*
* @param entity
* @param attributeInfos
* @param attributeValues
* @throws IfcParserException
*/
private void setEntityAttributeValues(
IfcEntity entity, List<IfcAttributeInfo> attributeInfos, List<IfcValue> attributeValues)
throws IfcParserException {
try {
if (attributeValues.size() == attributeInfos.size()) {
boolean isLiteralValueContainer = true;
for (int attributeIndex = 0; attributeIndex < attributeValues.size(); ++attributeIndex) {
IfcAttributeInfo attributeInfo = attributeInfos.get(attributeIndex);
IfcValue attributeValue = attributeValues.get(attributeIndex);
Boolean isLiteralValue = attributeValue.isLiteralType();
if (isLiteralValue != null) {
isLiteralValueContainer = isLiteralValueContainer && isLiteralValue == Boolean.TRUE;
if (isLiteralValue) {
if (attributeValue instanceof IfcTemporaryCollectionValueWrapper) {
if (attributeInfo.isCollection()) {
IfcLiteralValueCollection values = new IfcLiteralValueCollection();
for (IfcValue value :
((IfcTemporaryCollectionValueWrapper) attributeValue).getValues()) {
values.add((IfcLiteralValue) value);
}
entity.addLiteralAttribute(
new IfcLiteralAttribute(attributeInfo, attributeIndex, values));
} else {
for (IfcValue value :
((IfcTemporaryCollectionValueWrapper) attributeValue).getValues()) {
entity.addLiteralAttribute(
new IfcLiteralAttribute(attributeInfo, attributeIndex, value));
}
}
} else {
assert (attributeValue instanceof IfcLiteralValue)
: String.format(
"Object is not a literal value, line number: %d, attributeInfo: %s, attribute value: %s, value type: %s",
entity.getLineNumber(),
attributeInfo.getName(),
attributeValue,
attributeInfo.getAttributeTypeInfo().getValueTypes());
entity.addLiteralAttribute(
new IfcLiteralAttribute(attributeInfo, attributeIndex, attributeValue));
}
} else { // attributeInfo instanceof IfcLinkInfo
if (attributeValue instanceof IfcTemporaryCollectionValueWrapper) {
if (attributeInfo.isCollection()) {
IfcEntityCollection destinations = new IfcEntityCollection();
for (IfcValue destination :
((IfcTemporaryCollectionValueWrapper) attributeValue).getValues()) {
destinations.add((IfcEntity) destination);
}
entity.addOutgoingLink(
new IfcLink(
(IfcLinkInfo) attributeInfo, attributeIndex, entity, destinations));
} else {
for (IfcValue destination :
((IfcTemporaryCollectionValueWrapper) attributeValue).getValues()) {
IfcLink link =
new IfcLink(
(IfcLinkInfo) attributeInfo,
attributeIndex,
entity,
(IfcEntityBase) destination);
entity.addOutgoingLink(link);
}
}
} else {
assert (attributeValue instanceof IfcEntityBase)
: String.format(
"Object is not an entity, line number: %d, attributeInfo: %s, attribute value: %s, value type: %s",
entity.getLineNumber(),
attributeInfo.getName(),
attributeValue,
attributeInfo.getAttributeTypeInfo().getValueTypes());
IfcLink link =
new IfcLink(
(IfcLinkInfo) attributeInfo,
attributeIndex,
entity,
(IfcEntityBase) attributeValue);
entity.addOutgoingLink(link);
}
}
}
}
entity.setLiteralValueContainer(isLiteralValueContainer);
} else {
throw new IfcParserException(
String.format(
"Type %s: Expected %d attributes, but %d were found: %s, %s",
entity.getTypeInfo().getName(),
attributeInfos.size(),
attributeValues.size(),
attributeInfos,
attributeValues));
}
} catch (Exception e) {
throw new IfcParserException(
String.format(
"Error parsing entity %s (line %d): %s",
entity.toString(), entity.getLineNumber(), e.getMessage()),
e);
}
}