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builder improvements

This commit is contained in:
eugenp 2015-01-29 14:14:36 +02:00
parent 425c681858
commit f0e18fc212
2 changed files with 22 additions and 26 deletions
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24
spring-security-rest-full/src/main/java/org/baeldung/persistence/dao/UserSpecificationsBuilder.java
View File

@ -8,40 +8,36 @@ import org.baeldung.web.util.SearchCriteria;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.data.jpa.domain.Specifications;
public class UserSpecificationsBuilder {
public final class UserSpecificationsBuilder {
private List<SearchCriteria> params;
private final List<SearchCriteria> params;
public UserSpecificationsBuilder() {
params = new ArrayList<SearchCriteria>();
}
public UserSpecificationsBuilder with(final String key, final String operation, final Object value) {
final UserSpecificationsBuilder builder = new UserSpecificationsBuilder();
final List<SearchCriteria> newParams = new ArrayList<SearchCriteria>(params);
newParams.add(new SearchCriteria(key, operation, value));
builder.params = newParams;
return builder;
// API
public final UserSpecificationsBuilder with(final String key, final String operation, final Object value) {
params.add(new SearchCriteria(key, operation, value));
return this;
}
public Specification<User> build() {
if (params.size() == 0)
if (params.size() == 0) {
return null;
}
final List<Specification<User>> specs = new ArrayList<Specification<User>>();
for (final SearchCriteria param : params) {
specs.add(new UserSpecification(param));
}
if (specs.size() == 0)
return null;
Specification<User> result = specs.get(0);
for (int i = 1; i < specs.size(); i++) {
result = Specifications.where(result).and(specs.get(i));
}
return result;
}
}

24
spring-security-rest-full/src/main/java/org/baeldung/web/controller/UserController.java
View File

@ -39,11 +39,12 @@ public class UserController {
super();
}
// API - READ
@RequestMapping(method = RequestMethod.GET, value = "/users")
@ResponseBody
public List<User> findAll(@RequestParam(value = "search", required = false) final String search) {
final List<SearchCriteria> params = new ArrayList<SearchCriteria>();
if (search != null) {
final Pattern pattern = Pattern.compile("(\\w+?)(:|<|>)(\\w+?),");
final Matcher matcher = pattern.matcher(search + ",");
@ -57,19 +58,15 @@ public class UserController {
@RequestMapping(method = RequestMethod.GET, value = "/users/spec")
@ResponseBody
public List<User> findAllBySpecification(@RequestParam(value = "search") final String search) {
UserSpecificationsBuilder builder = new UserSpecificationsBuilder();
if (search != null) {
final Pattern pattern = Pattern.compile("(\\w+?)(:|<|>)(\\w+?),");
final Matcher matcher = pattern.matcher(search + ",");
while (matcher.find()) {
builder = builder.with(matcher.group(1), matcher.group(2), matcher.group(3));
}
final UserSpecificationsBuilder builder = new UserSpecificationsBuilder();
final Pattern pattern = Pattern.compile("(\\w+?)(:|<|>)(\\w+?),");
final Matcher matcher = pattern.matcher(search + ",");
while (matcher.find()) {
builder.with(matcher.group(1), matcher.group(2), matcher.group(3));
}
final Specification<User> spec = builder.build();
if (spec == null)
return dao.findAll();
else
return dao.findAll(spec);
return dao.findAll(spec);
}
@RequestMapping(method = RequestMethod.GET, value = "/myusers")
@ -91,6 +88,8 @@ public class UserController {
return mydao.findAll(exp);
}
// API - WRITE
@RequestMapping(method = RequestMethod.GET, value = "/users/new")
@ResponseBody
public long addUser(@RequestParam("first") final String first, @RequestParam("last") final String last, @RequestParam("age") final int age) {
@ -114,4 +113,5 @@ public class UserController {
mydao.save(user);
return user.getId();
}
}