/**
* 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;
}
/**
* Parses an entity's attribute string to get attribute values
*
* @param attributeStringBuilder
* @param attributeValueType
* @return a single attribute value or list of attribute values
* @throws IfcFormatException
* @throws IfcNotFoundException
* @throws IfcValueTypeConflictException
*/
private List<IfcValue> parseAttributeValues(
StrBuilderWrapper attributeStrBuilderWrapper,
IfcEntity entity,
List<IfcAttributeInfo> entityAttributeInfos,
IfcTypeInfo commonAttributeTypeInfo,
EnumSet<IfcTypeEnum> commonValueTypes)
throws IfcFormatException, IfcNotFoundException {
logger.debug(String.format("Parsing entity '%s'", entity));
List<IfcValue> attributeValues = new ArrayList<>();
for (int attributeIndex = 0;
!attributeStrBuilderWrapper.trimLeft().isEmpty();
++attributeIndex) {
EnumSet<IfcTypeEnum> attributeValueTypes;
IfcAttributeInfo attributeInfo;
IfcTypeInfo attributeTypeInfo;
if (commonValueTypes == null) {
assert (attributeIndex < entityAttributeInfos.size())
: String.format(
"attributeIndex=%d, entityAttributeInfos.size=%s, attributeStrBuilderWrapper='%s'",
attributeIndex, entityAttributeInfos, attributeStrBuilderWrapper);
attributeInfo = entityAttributeInfos.get(attributeIndex);
attributeTypeInfo = attributeInfo.getAttributeTypeInfo();
attributeValueTypes = attributeTypeInfo.getValueTypes();
} else {
assert (commonAttributeTypeInfo != null);
attributeInfo = entityAttributeInfos.get(0);
attributeTypeInfo = commonAttributeTypeInfo;
attributeValueTypes = commonValueTypes;
}
if (attributeTypeInfo instanceof IfcCollectionTypeInfo) {
attributeTypeInfo = ((IfcCollectionTypeInfo) attributeTypeInfo).getItemTypeInfo();
}
switch (attributeStrBuilderWrapper.charAt(0)) {
case IfcVocabulary.StepFormat.LINE_NUMBER_SYMBOL: // Entity
attributeStrBuilderWrapper.skip(1);
Long remoteLineNumber = attributeStrBuilderWrapper.getLong();
IfcEntity remoteEntity = getEntity(remoteLineNumber);
if (remoteEntity == null) {
throw new IfcNotFoundException("Entity not found: #" + remoteLineNumber);
}
attributeValues.add(remoteEntity);
break;
case IfcVocabulary.StepFormat.STRING_VALUE_SYMBOL:
String s = attributeStrBuilderWrapper.getStringBetweenSingleQuotes();
assert attributeValueTypes.size() == 1 : "Expect attributeValueTypes.size() == 1";
// if (!attributeValueTypes.contains(IfcTypeEnum.GUID)) {
attributeValues.add(new IfcLiteralValue(s, attributeTypeInfo, IfcTypeEnum.STRING));
// break;
// } else {
// attributeValues.add(new IfcGuidValue(s));
// break;
// }
break;
case IfcVocabulary.StepFormat.ENUMERATION_VALUE_SYMBOL:
s =
attributeStrBuilderWrapper.getStringBetweenSimilarCharacters(
IfcVocabulary.StepFormat.ENUMERATION_VALUE_SYMBOL);
assert attributeValueTypes.size() == 1 : "Expect attributeValueTypes.size() == 1";
if (!attributeValueTypes.contains(IfcTypeEnum.LOGICAL)) {
attributeValues.add(new IfcLiteralValue(s, attributeTypeInfo, IfcTypeEnum.ENUM));
} else {
switch (s) {
case "T":
case "TRUE":
attributeValues.add(
new IfcLiteralValue(
LogicalEnum.TRUE.toString(), attributeTypeInfo, IfcTypeEnum.LOGICAL));
break;
case "F":
case "FALSE":
attributeValues.add(
new IfcLiteralValue(
LogicalEnum.FALSE.toString(), attributeTypeInfo, IfcTypeEnum.LOGICAL));
break;
default:
attributeValues.add(
new IfcLiteralValue(
LogicalEnum.UNKNOWN.toString(), attributeTypeInfo, IfcTypeEnum.LOGICAL));
break;
}
}
break;
case IfcVocabulary.StepFormat.NULL_SYMBOL: // $
attributeValues.add(IfcValue.NULL);
attributeStrBuilderWrapper.skip(1);
break;
case IfcVocabulary.StepFormat.ANY_SYMBOL: // *
attributeValues.add(IfcValue.ANY);
attributeStrBuilderWrapper.skip(1);
break;
case StringUtils.OPENING_ROUND_BRACKET_CHAR: // List or Set
String stringBetweenBrackets = attributeStrBuilderWrapper.getStringBetweenRoundBrackets();
StrBuilderWrapper sbWrapper = new StrBuilderWrapper(stringBetweenBrackets);
List<IfcAttributeInfo> attributeInfos = new ArrayList<>(1);
attributeInfos.add(attributeInfo);
List<IfcValue> values =
parseAttributeValues(
sbWrapper, null, attributeInfos, attributeTypeInfo, attributeValueTypes);
attributeValues.add(new IfcTemporaryCollectionValueWrapper(values));
break;
default:
if (Character.isAlphabetic(attributeStrBuilderWrapper.charAt(0))) {
//
// parsing sub entity
//
String subEntityTypeInfoName = attributeStrBuilderWrapper.getIdentifierName();
IfcNonEntityTypeInfo subNonEntityTypeInfo =
schema.getNonEntityTypeInfo(subEntityTypeInfoName);
attributeValueTypes = subNonEntityTypeInfo.getValueTypes();
s = attributeStrBuilderWrapper.getStringBetweenRoundBrackets();
assert (s != null);
attributeInfos = new ArrayList<>(1);
attributeInfos.add(attributeInfo);
values =
parseAttributeValues(
new StrBuilderWrapper(s),
null,
attributeInfos,
subNonEntityTypeInfo,
attributeValueTypes);
assert values.size() == 1
: "Expect only 1 argument: " + entity + ":" + values.toString();
// attributeValues.add(new IfcShortEntity(subNonEntityTypeInfo,
// (IfcLiteralValue)values.get(0)));
attributeValues.add((IfcLiteralValue) values.get(0));
} else {
//
// parsing number or datetime
//
assert attributeValueTypes.size() == 1 : "Expect attributeValueTypes.size() == 1";
IfcTypeEnum attributeValueType = (IfcTypeEnum) attributeValueTypes.toArray()[0];
Object value;
if (attributeValueType == IfcTypeEnum.INTEGER) {
value = attributeStrBuilderWrapper.getLong();
} else if (attributeValueType == IfcTypeEnum.REAL) {
value = attributeStrBuilderWrapper.getDouble();
} else {
assert attributeValueType == IfcTypeEnum.DATETIME;
long timeStamp = attributeStrBuilderWrapper.getLong();
value = Calendar.getInstance();
((Calendar) value).setTimeInMillis(timeStamp * 1000);
}
attributeValues.add(
new IfcLiteralValue(
value, (IfcNonEntityTypeInfo) attributeTypeInfo, attributeValueType));
}
break;
}
attributeStrBuilderWrapper.trimLeft();
attributeStrBuilderWrapper.getFirstMatch(StrMatcher.commaMatcher());
}
return attributeValues;
}