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binder support 

git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@1636 50f2f4bb-b051-0410-bef5-90022cba6387
This commit is contained in:
Keith Donald 2009-07-27 12:36:16 +00:00
parent 7a11e8bdf9
commit dadce726d9
3 changed files with 13 additions and 30 deletions
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14
org.springframework.context/src/main/java/org/springframework/model/binder/support/AbstractBinder.java → org.springframework.context/src/main/java/org/springframework/model/binder/support/BinderSupport.java
View File

@ -15,32 +15,26 @@
*/
package org.springframework.model.binder.support;
import java.util.Map;
import org.springframework.context.MessageSource;
import org.springframework.model.binder.Binder;
import org.springframework.model.binder.BindingResult;
import org.springframework.model.binder.BindingResults;
import org.springframework.model.binder.MissingFieldException;
import org.springframework.util.Assert;
/**
* Base Binder implementation that defines common structural elements.
* Subclasses should parameterized & implement {@link #bind(Map, Object)}.
* Binder implementation support class that defines common structural elements.
* @author Keith Donald
* @since 3.0
* @see #setRequiredFields(String[])
* @see #setMessageSource(MessageSource)
* @see #createBindTemplate()
* @see #bind(Map, Object)
*/
public abstract class AbstractBinder<M> implements Binder<M> {
public abstract class BinderSupport {
private BindTemplate bindTemplate;
private MessageSource messageSource;
public AbstractBinder() {
public BinderSupport() {
bindTemplate = createBindTemplate();
}
@ -62,8 +56,6 @@ public abstract class AbstractBinder<M> implements Binder<M> {
this.messageSource = messageSource;
}
public abstract BindingResults bind(Map<String, ? extends Object> fieldValues, M model);
// subclass hooks
/**

24
org.springframework.context/src/main/java/org/springframework/model/binder/support/GenericBinder.java
View File

@ -13,7 +13,6 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.model.binder.support;
import java.util.Map;
@ -36,26 +35,22 @@ import org.springframework.model.binder.BindingResults;
* A {@link Binder} implementation that accepts any target object and uses
* Spring's Expression Language support to evaluate the keys in the field
* value Map.
*
* @author Mark Fisher
* @since 3.0
*/
public class GenericBinder extends AbstractBinder<Object> {
public class GenericBinder extends BinderSupport implements Binder<Object> {
private final ExpressionParser parser = new SpelExpressionParser(
SpelExpressionParserConfiguration.CreateObjectIfAttemptToReferenceNull |
SpelExpressionParserConfiguration.GrowListsOnIndexBeyondSize);
SpelExpressionParserConfiguration.CreateObjectIfAttemptToReferenceNull
| SpelExpressionParserConfiguration.GrowListsOnIndexBeyondSize);
@Override
public BindingResults bind(Map<String, ? extends Object> fieldValues, Object model) {
StandardEvaluationContext evaluationContext = new StandardEvaluationContext();
evaluationContext.setRootObject(model);
FieldBinder fieldBinder = new EvaluationContextFieldBinder(this.parser, evaluationContext);
return this.getBindTemplate().bind(fieldValues, fieldBinder);
FieldBinder fieldBinder = new EvaluationContextFieldBinder(parser, evaluationContext);
return getBindTemplate().bind(fieldValues, fieldBinder);
}
private static class EvaluationContextFieldBinder implements FieldBinder {
private final ExpressionParser parser;
@ -73,18 +68,15 @@ public class GenericBinder extends AbstractBinder<Object> {
Expression e = this.parser.parseExpression(key);
e.setValue(this.context, value);
alert = new BindSuccessAlert();
}
catch (ParseException e) {
} catch (ParseException e) {
alert = new ParseFailureAlert(e);
}
catch (EvaluationException e) {
} catch (EvaluationException e) {
alert = new EvaluationFailureAlert(e);
}
return new AlertBindingResult(key, value, alert);
}
}
private static class BindSuccessAlert implements Alert {
public String getCode() {
@ -100,7 +92,6 @@ public class GenericBinder extends AbstractBinder<Object> {
}
}
private static class ParseFailureAlert implements Alert {
private final ParseException exception;
@ -122,7 +113,6 @@ public class GenericBinder extends AbstractBinder<Object> {
}
}
private static class EvaluationFailureAlert implements Alert {
private final EvaluationException exception;

5
org.springframework.context/src/main/java/org/springframework/model/ui/support/PresentationModelBinder.java
View File

@ -18,10 +18,11 @@ package org.springframework.model.ui.support;
import java.util.Map;
import org.springframework.context.MessageSource;
import org.springframework.model.binder.Binder;
import org.springframework.model.binder.BindingResult;
import org.springframework.model.binder.BindingResults;
import org.springframework.model.binder.support.AbstractBinder;
import org.springframework.model.binder.support.AlertBindingResult;
import org.springframework.model.binder.support.BinderSupport;
import org.springframework.model.binder.support.FieldBinder;
import org.springframework.model.binder.support.FieldNotEditableResult;
import org.springframework.model.binder.support.FieldNotFoundResult;
@ -38,7 +39,7 @@ import org.springframework.model.ui.PresentationModel;
* @see #setRequiredFields(String[])
* @see #bind(Map, PresentationModel)
*/
public class PresentationModelBinder extends AbstractBinder<PresentationModel> {
public class PresentationModelBinder extends BinderSupport implements Binder<PresentationModel> {
public BindingResults bind(Map<String, ? extends Object> fieldValues, PresentationModel model) {
fieldValues = filter(fieldValues, model);