@Before
public void setUp() throws Exception {
serializer = new LuceneSerializer(true, true);
entityPath = new PathBuilder<Object>(Object.class, "obj");
title = entityPath.getString("title");
author = entityPath.getString("author");
text = entityPath.getString("text");
publisher = entityPath.getString("publisher");
year = entityPath.getNumber("year", Integer.class);
rating = entityPath.getString("rating");
gross = entityPath.getNumber("gross", Double.class);
longField = entityPath.getNumber("longField", Long.class);
shortField = entityPath.getNumber("shortField", Short.class);
byteField = entityPath.getNumber("byteField", Byte.class);
floatField = entityPath.getNumber("floatField", Float.class);
idx = new RAMDirectory();
config =
new IndexWriterConfig(Version.LUCENE_31, new StandardAnalyzer(Version.LUCENE_30))
.setOpenMode(IndexWriterConfig.OpenMode.CREATE);
writer = new IndexWriter(idx, config);
writer.addDocument(createDocument());
writer.close();
IndexReader reader = IndexReader.open(idx);
searcher = new IndexSearcher(reader);
}
/**
* Creates a Predicate from list of BooleanExpression predicates which represents all search
* filters.
*
* @param config PaginationConfiguration data holding object
* @return query to filter entities according pagination configuration data.
*/
@SuppressWarnings({"rawtypes", "unchecked"})
protected Predicate getPredicate(PaginationConfiguration config) {
PathBuilder<T> entityPath = new PathBuilder(entityClass, getAliasName(entityClass));
BooleanExpression predicate = null;
Map<String, Object> filters = config.getFilters();
if (filters != null) {
// first we process nonstandard filters
List<String> filtersToRemove = processNonStandardFilters(filters, entityPath);
filters = removeUsedFilters(filtersToRemove, filters);
if (!filters.isEmpty()) {
for (Map.Entry<String, Object> entry : filters.entrySet()) {
String key = entry.getKey();
Object filter = entry.getValue();
if (filter != null) {
// if ranged search (from - to fields)
if (key.contains("fromRange-")) {
// CHECKSTYLE:OFF
String parsedKey = key.substring(10);
// CHECKSTYLE:ON
if (filter instanceof Number) {
NumberPath path = createNumberPath(entityPath, parsedKey, filter);
predicate = and(predicate, path.goe((Number) filter));
} else if (filter instanceof Date) {
DatePath path = entityPath.getDate(parsedKey, Date.class);
predicate = and(predicate, path.goe((Date) filter));
}
} else if (key.contains("toRange-")) {
// CHECKSTYLE:OFF
String parsedKey = key.substring(8);
// CHECKSTYLE:ON
if (filter instanceof Number) {
NumberPath path = createNumberPath(entityPath, parsedKey, filter);
predicate = and(predicate, path.loe((Number) filter));
} else if (filter instanceof Date) {
DatePath path = entityPath.getDate(parsedKey, Date.class);
predicate = and(predicate, path.loe((Date) filter));
}
} else if (key.contains("list-")) {
// CHECKSTYLE:OFF
// if searching elements from list
String parsedKey = key.substring(5);
// CHECKSTYLE:ON
ListPath path = entityPath.getList(parsedKey, filter.getClass());
predicate = and(predicate, path.contains(filter));
} else { // if not ranged search
if (filter instanceof String) {
StringPath path = entityPath.getString(key);
String filterString = (String) filter;
predicate = and(predicate, path.startsWithIgnoreCase(filterString));
} else if (filter instanceof Date) {
DatePath path = entityPath.getDate(key, Date.class);
predicate = and(predicate, path.eq(filter));
} else if (filter instanceof Number) {
NumberPath path = createNumberPath(entityPath, key, filter);
predicate = and(predicate, path.eq(filter));
} else if (filter instanceof Boolean) {
BooleanPath path = entityPath.getBoolean(key);
predicate = and(predicate, path.eq((Boolean) filter));
} else if (filter instanceof Enum) {
EnumPath path = entityPath.getEnum(key, Enum.class);
predicate = and(predicate, path.eq(filter));
} else if (BaseEntity.class.isAssignableFrom(filter.getClass())) {
PathBuilder path = entityPath.get(key);
predicate = and(predicate, path.eq(filter));
}
}
}
}
}
}
return predicate;
}
