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fix predicate builder

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DOHA 2015-01-30 00:34:23 +02:00
parent f0e18fc212
commit 34222efc27
2 changed files with 9 additions and 20 deletions
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19
spring-security-rest-full/src/main/java/org/baeldung/persistence/dao/MyUserPredicatesBuilder.java
View File

@ -7,28 +7,25 @@ import org.baeldung.web.util.SearchCriteria;
import com.mysema.query.types.expr.BooleanExpression; import com.mysema.query.types.expr.BooleanExpression;
public class MyUserPredicatesBuilder { public final class MyUserPredicatesBuilder {
private List<SearchCriteria> params; private final List<SearchCriteria> params;
public MyUserPredicatesBuilder() { public MyUserPredicatesBuilder() {
params = new ArrayList<SearchCriteria>(); params = new ArrayList<SearchCriteria>();
} }
public MyUserPredicatesBuilder with(final String key, final String operation, final Object value) { public MyUserPredicatesBuilder with(final String key, final String operation, final Object value) {
final MyUserPredicatesBuilder builder = new MyUserPredicatesBuilder(); params.add(new SearchCriteria(key, operation, value));
final List<SearchCriteria> newParams = new ArrayList<SearchCriteria>(params); return this;
newParams.add(new SearchCriteria(key, operation, value));
builder.params = newParams;
return builder;
} }
public BooleanExpression build() { public BooleanExpression build() {
if (params.size() == 0) if (params.size() == 0) {
return null; return null;
}
final List<BooleanExpression> predicates = new ArrayList<BooleanExpression>(); final List<BooleanExpression> predicates = new ArrayList<BooleanExpression>();
MyUserPredicate predicate; MyUserPredicate predicate;
for (final SearchCriteria param : params) { for (final SearchCriteria param : params) {
predicate = new MyUserPredicate(param); predicate = new MyUserPredicate(param);
final BooleanExpression exp = predicate.getPredicate(); final BooleanExpression exp = predicate.getPredicate();
@ -37,14 +34,10 @@ public class MyUserPredicatesBuilder {
} }
} }
if (predicates.size() == 0)
return null;
BooleanExpression result = predicates.get(0); BooleanExpression result = predicates.get(0);
for (int i = 1; i < predicates.size(); i++) { for (int i = 1; i < predicates.size(); i++) {
result = result.and(predicates.get(i)); result = result.and(predicates.get(i));
} }
return result; return result;
} }
} }

10
spring-security-rest-full/src/main/java/org/baeldung/web/controller/UserController.java
View File

@ -72,20 +72,16 @@ public class UserController {
@RequestMapping(method = RequestMethod.GET, value = "/myusers") @RequestMapping(method = RequestMethod.GET, value = "/myusers")
@ResponseBody @ResponseBody
public Iterable<MyUser> findAllByQuerydsl(@RequestParam(value = "search") final String search) { public Iterable<MyUser> findAllByQuerydsl(@RequestParam(value = "search") final String search) {
MyUserPredicatesBuilder builder = new MyUserPredicatesBuilder(); final MyUserPredicatesBuilder builder = new MyUserPredicatesBuilder();
if (search != null) { if (search != null) {
final Pattern pattern = Pattern.compile("(\\w+?)(:|<|>)(\\w+?),"); final Pattern pattern = Pattern.compile("(\\w+?)(:|<|>)(\\w+?),");
final Matcher matcher = pattern.matcher(search + ","); final Matcher matcher = pattern.matcher(search + ",");
while (matcher.find()) { while (matcher.find()) {
builder = builder.with(matcher.group(1), matcher.group(2), matcher.group(3)); builder.with(matcher.group(1), matcher.group(2), matcher.group(3));
} }
} }
final BooleanExpression exp = builder.build(); final BooleanExpression exp = builder.build();
if (exp == null) return mydao.findAll(exp);
return mydao.findAll();
else
return mydao.findAll(exp);
} }
// API - WRITE // API - WRITE