public QueryParameters getQueryParameters() {
LockOptions lockOptions = new LockOptions();
RowSelection selection = new RowSelection();
selection.setFirstRow(rootCriteria.getFirstResult());
selection.setMaxRows(rootCriteria.getMaxResults());
selection.setTimeout(rootCriteria.getTimeout());
selection.setFetchSize(rootCriteria.getFetchSize());
Iterator iter = rootCriteria.getLockModes().entrySet().iterator();
while (iter.hasNext()) {
Map.Entry me = (Map.Entry) iter.next();
final Criteria subcriteria = getAliasedCriteria((String) me.getKey());
lockOptions.setAliasSpecificLockMode(getSQLAlias(subcriteria), (LockMode) me.getValue());
}
List values = new ArrayList();
List types = new ArrayList();
iter = rootCriteria.iterateSubcriteria();
while (iter.hasNext()) {
CriteriaImpl.Subcriteria subcriteria = (CriteriaImpl.Subcriteria) iter.next();
LockMode lm = subcriteria.getLockMode();
if (lm != null) {
lockOptions.setAliasSpecificLockMode(getSQLAlias(subcriteria), lm);
}
if (subcriteria.getWithClause() != null) {
TypedValue[] tv = subcriteria.getWithClause().getTypedValues(subcriteria, this);
for (int i = 0; i < tv.length; i++) {
values.add(tv[i].getValue());
types.add(tv[i].getType());
}
}
}
// Type and value gathering for the WHERE clause needs to come AFTER lock mode gathering,
// because the lock mode gathering loop now contains join clauses which can contain
// parameter bindings (as in the HQL WITH clause).
iter = rootCriteria.iterateExpressionEntries();
while (iter.hasNext()) {
CriteriaImpl.CriterionEntry ce = (CriteriaImpl.CriterionEntry) iter.next();
TypedValue[] tv = ce.getCriterion().getTypedValues(ce.getCriteria(), this);
for (int i = 0; i < tv.length; i++) {
values.add(tv[i].getValue());
types.add(tv[i].getType());
}
}
Object[] valueArray = values.toArray();
Type[] typeArray = ArrayHelper.toTypeArray(types);
return new QueryParameters(
typeArray,
valueArray,
lockOptions,
selection,
rootCriteria.isReadOnlyInitialized(),
(rootCriteria.isReadOnlyInitialized() ? rootCriteria.isReadOnly() : false),
rootCriteria.getCacheable(),
rootCriteria.getCacheRegion(),
rootCriteria.getComment(),
rootCriteria.isLookupByNaturalKey(),
rootCriteria.getResultTransformer());
}
@SuppressWarnings({"unchecked", "rawtypes"})
protected int countCriteriaResult(final Criteria c) {
CriteriaImpl impl = (CriteriaImpl) c;
Projection projection = impl.getProjection();
ResultTransformer transformer = impl.getResultTransformer();
List<CriteriaImpl.OrderEntry> orderEntries = null;
try {
orderEntries =
(List<CriteriaImpl.OrderEntry>) ReflectionUtils.getFieldValue(impl, "orderEntries");
ReflectionUtils.setFieldValue(impl, "orderEntries", new ArrayList());
} catch (Exception e) {
logger.error("", e);
}
int totalCount = (Integer) c.setProjection(Projections.rowCount()).uniqueResult();
c.setProjection(projection);
if (projection == null) {
c.setResultTransformer(CriteriaSpecification.ROOT_ENTITY);
}
if (transformer != null) {
c.setResultTransformer(transformer);
}
try {
ReflectionUtils.setFieldValue(impl, "orderEntries", orderEntries);
} catch (Exception e) {
logger.error("", e);
}
return totalCount;
}
protected long countCriteriaResult(Criteria c) {
CriteriaImpl impl = (CriteriaImpl) c;
Projection projection = impl.getProjection();
ResultTransformer transformer = impl.getResultTransformer();
List orderEntries = null;
try {
orderEntries = (List) ReflectionUtils.getFieldValue(impl, "orderEntries");
ReflectionUtils.setFieldValue(impl, "orderEntries", new ArrayList());
} catch (Exception e) {
this.logger.error("不可能抛出的异常:{}", e.getMessage());
}
Long totalCountObject = Long.valueOf(0L);
Object object = c.setProjection(Projections.rowCount()).uniqueResult();
if (object instanceof Long) totalCountObject = (Long) object;
else if (object instanceof Integer) {
totalCountObject = Long.valueOf(((Integer) object).intValue());
}
long totalCount = (totalCountObject != null) ? totalCountObject.longValue() : 0L;
c.setProjection(projection);
if (projection == null) {
c.setResultTransformer(CriteriaSpecification.ROOT_ENTITY);
}
if (transformer != null) c.setResultTransformer(transformer);
try {
ReflectionUtils.setFieldValue(impl, "orderEntries", orderEntries);
} catch (Exception e) {
this.logger.error("不可能抛出的异常:{}", e.getMessage());
}
return totalCount;
}
/**
* 通过count查询获得本次查询所能获得的对象总数.
*
* @return page对象中的totalCount属性将赋值.
*/
protected int countQueryResult(Page<T> page, Criteria c) {
CriteriaImpl impl = (CriteriaImpl) c;
// 先把Projection、ResultTransformer、OrderBy取出来,清空三者后再执行Count操作
Projection projection = impl.getProjection();
ResultTransformer transformer = impl.getResultTransformer();
List<CriteriaImpl.OrderEntry> orderEntries = null;
try {
orderEntries = (List) BeanUtils.getFieldValue(impl, "orderEntries");
BeanUtils.setFieldValue(impl, "orderEntries", new ArrayList());
} catch (Exception e) {
log.error("不可能抛出的异常", e);
}
// 执行Count查询
int totalCount = (Integer) c.setProjection(Projections.rowCount()).uniqueResult();
if (totalCount < 1) return -1;
// 将之前的Projection和OrderBy条件重新设回去
c.setProjection(projection);
if (projection == null) {
c.setResultTransformer(CriteriaSpecification.ROOT_ENTITY);
}
if (transformer != null) {
c.setResultTransformer(transformer);
}
try {
BeanUtils.setFieldValue(impl, "orderEntries", orderEntries);
} catch (Exception e) {
log.error("不可能抛出的异常", e);
}
return totalCount;
}