Merge pull request #6036 from atorralba/atorralba/spring-beans

Java: Flow summaries for Spring's Bean Properties classes
This commit is contained in:
Anders Schack-Mulligen
2021-06-30 15:41:24 +02:00
committed by GitHub
11 changed files with 651 additions and 0 deletions

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@@ -87,6 +87,7 @@ private module Frameworks {
private import semmle.code.java.frameworks.spring.SpringHttp
private import semmle.code.java.frameworks.spring.SpringUtil
private import semmle.code.java.frameworks.spring.SpringWebClient
private import semmle.code.java.frameworks.spring.SpringBeans
private import semmle.code.java.security.ResponseSplitting
private import semmle.code.java.security.InformationLeak
private import semmle.code.java.security.XSS

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@@ -6,6 +6,7 @@ import semmle.code.java.frameworks.spring.SpringAttribute
import semmle.code.java.frameworks.spring.SpringAutowire
import semmle.code.java.frameworks.spring.SpringBean
import semmle.code.java.frameworks.spring.SpringBeanFile
import semmle.code.java.frameworks.spring.SpringBeans
import semmle.code.java.frameworks.spring.SpringBeanRefType
import semmle.code.java.frameworks.spring.SpringComponentScan
import semmle.code.java.frameworks.spring.SpringConstructorArg

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@@ -0,0 +1,44 @@
/**
* Provides classes and predicates for working with Spring classes and interfaces from
* `org.springframework.beans`.
*/
import java
private import semmle.code.java.dataflow.ExternalFlow
/**
* Provides models for the `org.springframework.beans` package.
*/
private class FlowSummaries extends SummaryModelCsv {
override predicate row(string row) {
row =
[
"org.springframework.beans;PropertyValue;false;PropertyValue;(String,Object);;Argument[0];MapKey of Argument[-1];value",
"org.springframework.beans;PropertyValue;false;PropertyValue;(String,Object);;Argument[1];MapValue of Argument[-1];value",
"org.springframework.beans;PropertyValue;false;PropertyValue;(PropertyValue);;Argument[0];Argument[-1];value",
"org.springframework.beans;PropertyValue;false;PropertyValue;(PropertyValue,Object);;MapKey of Argument[0];MapKey of Argument[-1];value",
"org.springframework.beans;PropertyValue;false;PropertyValue;(PropertyValue,Object);;Argument[1];MapValue of Argument[-1];value",
"org.springframework.beans;PropertyValue;false;getName;;;MapKey of Argument[-1];ReturnValue;value",
"org.springframework.beans;PropertyValue;false;getValue;;;MapValue of Argument[-1];ReturnValue;value",
"org.springframework.beans;PropertyValues;true;getPropertyValue;;;Element of Argument[-1];ReturnValue;value",
"org.springframework.beans;PropertyValues;true;getPropertyValues;;;Element of Argument[-1];ArrayElement of ReturnValue;value",
"org.springframework.beans;MutablePropertyValues;true;add;(String,Object);;Argument[0];MapKey of Element of Argument[-1];value",
"org.springframework.beans;MutablePropertyValues;true;add;(String,Object);;Argument[-1];ReturnValue;value",
"org.springframework.beans;MutablePropertyValues;true;add;(String,Object);;Argument[1];MapValue of Element of Argument[-1];value",
"org.springframework.beans;MutablePropertyValues;true;addPropertyValue;(PropertyValue);;Argument[0];Element of Argument[-1];value",
"org.springframework.beans;MutablePropertyValues;true;addPropertyValue;(PropertyValue);;Argument[-1];ReturnValue;value",
"org.springframework.beans;MutablePropertyValues;true;addPropertyValue;(String,Object);;Argument[0];MapKey of Element of Argument[-1];value",
"org.springframework.beans;MutablePropertyValues;true;addPropertyValue;(String,Object);;Argument[1];MapValue of Element of Argument[-1];value",
"org.springframework.beans;MutablePropertyValues;true;addPropertyValues;(Map);;MapKey of Argument[0];MapKey of Element of Argument[-1];value",
"org.springframework.beans;MutablePropertyValues;true;addPropertyValues;(Map);;MapValue of Argument[0];MapValue of Element of Argument[-1];value",
"org.springframework.beans;MutablePropertyValues;true;addPropertyValues;(Map);;Argument[-1];ReturnValue;value",
"org.springframework.beans;MutablePropertyValues;true;addPropertyValues;(PropertyValues);;Element of Argument[0];Element of Argument[-1];value",
"org.springframework.beans;MutablePropertyValues;true;addPropertyValues;(PropertyValues);;Argument[-1];ReturnValue;value",
"org.springframework.beans;MutablePropertyValues;true;get;;;MapValue of Element of Argument[-1];ReturnValue;value",
"org.springframework.beans;MutablePropertyValues;true;getPropertyValue;;;Element of Argument[-1];ReturnValue;value",
"org.springframework.beans;MutablePropertyValues;true;getPropertyValueList;;;Element of Argument[-1];Element of ReturnValue;value",
"org.springframework.beans;MutablePropertyValues;true;getPropertyValues;;;Element of Argument[-1];ArrayElement of ReturnValue;value",
"org.springframework.beans;MutablePropertyValues;true;setPropertyValueAt;;;Argument[0];Element of Argument[-1];value"
]
}
}

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@@ -0,0 +1,299 @@
package generatedtest;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.PropertyValue;
import org.springframework.beans.PropertyValues;
public class Test {
Object getMapKey(PropertyValue container) {
return container.getName();
}
Object getMapValue(PropertyValue container) {
return container.getValue();
}
PropertyValue getElement(Iterable<PropertyValue> container) {
return container.iterator().next();
}
PropertyValue getArrayElement(PropertyValue[] container) {
return container[0];
}
PropertyValue newWithMapKey(String element) {
return new PropertyValue(element, null);
}
PropertyValue newWithMapValue(String element) {
return new PropertyValue("", element);
}
MutablePropertyValues newWithElement(PropertyValue element) {
MutablePropertyValues pv = new MutablePropertyValues();
pv.addPropertyValue(element);
return pv;
}
String source() {
return null;
}
void sink(Object o) {}
public void test() {
// @formatter:off
// "org.springframework.beans;PropertyValue;false;;(String,Object);;Argument[0];MapKey of Argument[-1];value",
{
PropertyValue v = new PropertyValue((String) source(), null);
sink(getMapKey(v)); // $hasValueFlow
sink(getMapValue(v)); // Safe
}
// "org.springframework.beans;PropertyValue;false;;(String,Object);;Argument[1];MapValue of Argument[-1];value",
{
PropertyValue v = new PropertyValue("", source());
sink(getMapKey(v)); // Safe
sink(getMapValue(v)); // $hasValueFlow
}
// "org.springframework.beans;PropertyValue;false;;(PropertyValue);;Argument[0];Argument[-1];value",
{
PropertyValue v1 = new PropertyValue((String) source(), null);
PropertyValue v2 = new PropertyValue(v1);
sink(getMapKey(v2)); // $hasValueFlow
sink(getMapValue(v2)); // Safe
PropertyValue v3 = new PropertyValue("safe", source());
PropertyValue v4 = new PropertyValue(v3);
sink(getMapKey(v4)); // Safe
sink(getMapValue(v4)); // $hasValueFlow
}
// "org.springframework.beans;PropertyValue;false;;(PropertyValue,Object);;MapKey of Argument[0];MapKey of Argument[-1];value",
{
PropertyValue v1 = new PropertyValue((String) source(), source());
PropertyValue v2 = new PropertyValue(v1, null);
sink(getMapKey(v2)); // $hasValueFlow
sink(getMapValue(v2)); // Safe
}
// "org.springframework.beans;PropertyValue;false;PropertyValue;(PropertyValue,Object);;Argument[1];MapValue of Argument[-1];value",
{
PropertyValue v1 = new PropertyValue("safe", null);
PropertyValue v2 = new PropertyValue(v1, source());
sink(getMapKey(v2)); // Safe
sink(getMapValue(v2)); // $hasValueFlow
}
// "org.springframework.beans;PropertyValue;false;getName;;;MapKey of Argument[-1];ReturnValue;value",
{
PropertyValue v = new PropertyValue((String) source(), null);
sink(v.getName()); // $hasValueFlow
sink(v.getValue()); // Safe
}
// "org.springframework.beans;PropertyValue;false;getValue;;;MapValue of Argument[-1];ReturnValue;value",
{
PropertyValue v = new PropertyValue("safe", source());
sink(v.getName()); // Safe
sink(v.getValue()); // $hasValueFlow
}
// "org.springframework.beans;PropertyValues;true;getPropertyValue;;;Element of Argument[-1];ReturnValue;value",
{
PropertyValues pv = newWithElement(newWithMapValue(source()));
sink(pv.getPropertyValue("safe").getValue()); // $hasValueFlow
}
// "org.springframework.beans;PropertyValues;true;getPropertyValues;;;Element of Argument[-1];ArrayElement of ReturnValue;value",
{
PropertyValues pv = newWithElement(newWithMapValue(source()));
PropertyValue[] vs = pv.getPropertyValues();
sink(getMapKey(getArrayElement(vs))); // Safe
sink(getMapValue(getArrayElement(vs))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;add;(String,Object);;Argument[0];MapKey of Element of Argument[-1];value",
{
MutablePropertyValues pv = new MutablePropertyValues();
pv.add((String) source(), null);
sink(getMapKey(getElement(pv))); // $hasValueFlow
sink(getMapValue(getElement(pv))); // Safe
}
// "org.springframework.beans;MutablePropertyValues;true;add;(String,Object);;Argument[-1];ReturnValue;value",
{
MutablePropertyValues pv = new MutablePropertyValues();
sink(getMapKey(getElement(pv.add(source(), null)))); // $hasValueFlow
sink(getMapValue(getElement(pv.add(source(), null)))); // Safe
}
{
MutablePropertyValues pv = new MutablePropertyValues();
sink(getMapKey(getElement(pv.add("safe", source())))); // Safe
sink(getMapValue(getElement(pv.add("safe", source())))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;add;(String,Object);;Argument[1];MapValue of Element of Argument[-1];value",
{
MutablePropertyValues pv = new MutablePropertyValues();
pv.add("safe", source());
sink(getMapKey(getElement(pv))); // Safe
sink(getMapValue(getElement(pv))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;addPropertyValue;(PropertyValue);;Argument[0];Element of Argument[-1];value",
{
MutablePropertyValues pv1 = new MutablePropertyValues();
PropertyValue v1 = newWithMapKey(source());
pv1.addPropertyValue(v1);
sink(getMapKey(getElement(pv1))); // $hasValueFlow
sink(getMapValue(getElement(pv1))); // Safe
MutablePropertyValues pv2 = new MutablePropertyValues();
PropertyValue v2 = newWithMapValue(source());
pv2.addPropertyValue(v2);
sink(getMapKey(getElement(pv2))); // Safe
sink(getMapValue(getElement(pv2))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;addPropertyValue;(PropertyValue);;Argument[-1];ReturnValue;value",
{
MutablePropertyValues pv1 = new MutablePropertyValues();
PropertyValue v1 = newWithMapKey(source());
PropertyValues pv2 = pv1.addPropertyValue(v1);
sink(getMapKey(getElement(pv2))); // $hasValueFlow
sink(getMapValue(getElement(pv2))); // Safe
MutablePropertyValues pv3 = new MutablePropertyValues();
PropertyValue v2 = newWithMapValue(source());
PropertyValues pv4 = pv3.addPropertyValue(v2);
sink(getMapKey(getElement(pv4))); // Safe
sink(getMapValue(getElement(pv4))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;addPropertyValue;(String,Object);;Argument[0];MapKey of Element of Argument[-1];value",
{
MutablePropertyValues pv = new MutablePropertyValues();
pv.addPropertyValue((String)source(), null);
sink(getMapKey(getElement(pv))); // $hasValueFlow
sink(getMapValue(getElement(pv))); // Safe
}
// "org.springframework.beans;MutablePropertyValues;true;addPropertyValue;(String,Object);;Argument[1];MapValue of Element of Argument[-1];value",
{
MutablePropertyValues pv = new MutablePropertyValues();
pv.addPropertyValue("safe", source());
sink(getMapKey(getElement(pv))); // Safe
sink(getMapValue(getElement(pv))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;addPropertyValues;(Map);;MapKey of Argument[0];MapKey of Element of Argument[-1];value",
{
MutablePropertyValues pv = new MutablePropertyValues();
Map<String, Object> values = new HashMap<String, Object>();
values.put(source(), null);
pv.addPropertyValues(values);
sink(getMapKey(getElement(pv))); // $hasValueFlow
sink(getMapValue(getElement(pv))); // Safe
}
// "org.springframework.beans;MutablePropertyValues;true;addPropertyValues;(Map);;MapValue of Argument[0];MapValue of Element of Argument[-1];value",
{
MutablePropertyValues pv = new MutablePropertyValues();
Map<String, Object> values = new HashMap<String, Object>();
values.put("", source());
pv.addPropertyValues(values);
sink(getMapKey(getElement(pv))); // Safe
sink(getMapValue(getElement(pv))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;addPropertyValues;(Map);;Argument[-1];ReturnValue;value",
{
MutablePropertyValues pv = new MutablePropertyValues();
Map<String, Object> values = new HashMap<String, Object>();
values.put("", source());
PropertyValues pv2 = pv.addPropertyValues(values);
sink(getMapKey(getElement(pv2))); // Safe
sink(getMapValue(getElement(pv2))); // $hasValueFlow
}
{
MutablePropertyValues pv = new MutablePropertyValues();
Map<String, Object> values = new HashMap<String, Object>();
values.put(source(), null);
PropertyValues pv2 = pv.addPropertyValues(values);
sink(getMapKey(getElement(pv2))); // $hasValueFlow
sink(getMapValue(getElement(pv2))); // Safe
}
// "org.springframework.beans;MutablePropertyValues;true;addPropertyValues;(PropertyValues);;Element of Argument[0];Element of Argument[-1];value",
{
MutablePropertyValues pv = new MutablePropertyValues();
PropertyValues values = newWithElement(newWithMapKey(source()));
pv.addPropertyValues(values);
sink(getMapKey(getElement(pv))); // $hasValueFlow
sink(getMapValue(getElement(pv))); // Safe
}
{
MutablePropertyValues pv = new MutablePropertyValues();
PropertyValues values = newWithElement(newWithMapValue(source()));
pv.addPropertyValues(values);
sink(getMapKey(getElement(pv))); // Safe
sink(getMapValue(getElement(pv))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;addPropertyValues;(PropertyValues);;Argument[-1];ReturnValue;value",
{
MutablePropertyValues pv = new MutablePropertyValues();
PropertyValues values = newWithElement(newWithMapKey(source()));
PropertyValues pv2 = pv.addPropertyValues(values);
sink(getMapKey(getElement(pv2))); // $hasValueFlow
sink(getMapValue(getElement(pv2))); // Safe
}
{
MutablePropertyValues pv = new MutablePropertyValues();
PropertyValues values = newWithElement(newWithMapValue(source()));
PropertyValues pv2 = pv.addPropertyValues(values);
sink(getMapKey(getElement(pv2))); // Safe
sink(getMapValue(getElement(pv2))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;get;;;MapValue of Element of Argument[-1];ReturnValue;value",
{
MutablePropertyValues pv = newWithElement(newWithMapValue(source()));
sink(pv.get("something")); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;getPropertyValue;;;Element of Argument[-1];ReturnValue;value",
{
MutablePropertyValues pv1 = newWithElement(newWithMapKey(source()));
sink(pv1.getPropertyValue("something").getName()); // $hasValueFlow
sink(pv1.getPropertyValue("something").getValue()); // Safe
MutablePropertyValues pv2 = newWithElement(newWithMapValue(source()));
sink(pv2.getPropertyValue("something").getName()); // Safe
sink(pv2.getPropertyValue("something").getValue()); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;getPropertyValueList;;;Element of Argument[-1];Element of ReturnValue;value",
{
MutablePropertyValues pv1 = newWithElement(newWithMapKey(source()));
List<PropertyValue> pvl1 = pv1.getPropertyValueList();
sink(getMapKey(getElement(pvl1))); // $hasValueFlow
sink(getMapValue(getElement(pvl1))); // Safe
MutablePropertyValues pv2 = newWithElement(newWithMapValue(source()));
List<PropertyValue> pvl2 = pv2.getPropertyValueList();
sink(getMapKey(getElement(pvl2))); // Safe
sink(getMapValue(getElement(pvl2))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;getPropertyValues;;;Element of Argument[-1];ArrayElement of ReturnValue;value",
{
MutablePropertyValues pv1 = newWithElement(newWithMapKey(source()));
PropertyValue[] pvl1 = pv1.getPropertyValues();
sink(getMapKey(getArrayElement(pvl1))); // $hasValueFlow
sink(getMapValue(getArrayElement(pvl1))); // Safe
MutablePropertyValues pv2 = newWithElement(newWithMapValue(source()));
PropertyValue[] pvl2 = pv2.getPropertyValues();
sink(getMapKey(getArrayElement(pvl2))); // Safe
sink(getMapValue(getArrayElement(pvl2))); // $hasValueFlow
}
// "org.springframework.beans;MutablePropertyValues;true;setPropertyValueAt;;;Argument[0];Element of Argument[-1];value"
{
MutablePropertyValues pv1 = new MutablePropertyValues();
PropertyValue v1 = newWithMapKey(source());
pv1.setPropertyValueAt(v1, 0);
sink(getMapKey(getElement(pv1))); // $hasValueFlow
sink(getMapValue(getElement(pv1))); // Safe
MutablePropertyValues pv2 = new MutablePropertyValues();
PropertyValue v2 = newWithMapValue(source());
pv2.setPropertyValueAt(v2, 0);
sink(getMapKey(getElement(pv2))); // Safe
sink(getMapValue(getElement(pv2))); // $hasValueFlow
}
// @formatter:on
}
}

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@@ -0,0 +1 @@
//semmle-extractor-options: --javac-args -cp ${testdir}/../../../../stubs/springframework-5.3.8

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@@ -0,0 +1,52 @@
import java
import semmle.code.java.dataflow.ExternalFlow
import semmle.code.java.dataflow.TaintTracking
import TestUtilities.InlineExpectationsTest
class ValueFlowConf extends DataFlow::Configuration {
ValueFlowConf() { this = "qltest:valueFlowConf" }
override predicate isSource(DataFlow::Node n) {
n.asExpr().(MethodAccess).getMethod().hasName("source")
}
override predicate isSink(DataFlow::Node n) {
n.asExpr().(Argument).getCall().getCallee().hasName("sink")
}
}
class TaintFlowConf extends TaintTracking::Configuration {
TaintFlowConf() { this = "qltest:taintFlowConf" }
override predicate isSource(DataFlow::Node n) {
n.asExpr().(MethodAccess).getMethod().hasName("source")
}
override predicate isSink(DataFlow::Node n) {
n.asExpr().(Argument).getCall().getCallee().hasName("sink")
}
}
class HasFlowTest extends InlineExpectationsTest {
HasFlowTest() { this = "HasFlowTest" }
override string getARelevantTag() { result = ["hasValueFlow", "hasTaintFlow"] }
override predicate hasActualResult(Location location, string element, string tag, string value) {
tag = "hasValueFlow" and
exists(DataFlow::Node src, DataFlow::Node sink, ValueFlowConf conf | conf.hasFlow(src, sink) |
sink.getLocation() = location and
element = sink.toString() and
value = ""
)
or
tag = "hasTaintFlow" and
exists(DataFlow::Node src, DataFlow::Node sink, TaintFlowConf conf |
conf.hasFlow(src, sink) and not any(ValueFlowConf c).hasFlow(src, sink)
|
sink.getLocation() = location and
element = sink.toString() and
value = ""
)
}
}

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@@ -0,0 +1,135 @@
/*
* Copyright 2002-2020 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package org.springframework.beans;
import java.io.Serializable;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Spliterator;
import java.util.stream.Stream;
import org.springframework.lang.Nullable;
public class MutablePropertyValues implements PropertyValues, Serializable {
public MutablePropertyValues() {}
public MutablePropertyValues(@Nullable PropertyValues original) {}
public MutablePropertyValues(@Nullable Map<?, ?> original) {}
public MutablePropertyValues(@Nullable List<PropertyValue> propertyValueList) {}
public List<PropertyValue> getPropertyValueList() {
return null;
}
public int size() {
return 0;
}
public MutablePropertyValues addPropertyValues(@Nullable PropertyValues other) {
return null;
}
public MutablePropertyValues addPropertyValues(@Nullable Map<?, ?> other) {
return null;
}
public MutablePropertyValues addPropertyValue(PropertyValue pv) {
return null;
}
public void addPropertyValue(String propertyName, Object propertyValue) {}
public MutablePropertyValues add(String propertyName, @Nullable Object propertyValue) {
return null;
}
public void setPropertyValueAt(PropertyValue pv, int i) {}
public void removePropertyValue(PropertyValue pv) {}
public void removePropertyValue(String propertyName) {}
@Override
public Iterator<PropertyValue> iterator() {
return null;
}
@Override
public Spliterator<PropertyValue> spliterator() {
return null;
}
@Override
public Stream<PropertyValue> stream() {
return null;
}
@Override
public PropertyValue[] getPropertyValues() {
return null;
}
@Override
public PropertyValue getPropertyValue(String propertyName) {
return null;
}
public Object get(String propertyName) {
return null;
}
@Override
public PropertyValues changesSince(PropertyValues old) {
return null;
}
@Override
public boolean contains(String propertyName) {
return false;
}
@Override
public boolean isEmpty() {
return false;
}
public void registerProcessedProperty(String propertyName) {}
public void clearProcessedProperty(String propertyName) {}
public void setConverted() {}
public boolean isConverted() {
return false;
}
@Override
public boolean equals(@Nullable Object other) {
return false;
}
@Override
public int hashCode() {
return 0;
}
@Override
public String toString() {
return null;
}
}

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@@ -0,0 +1,70 @@
/*
* Copyright 2002-2019 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package org.springframework.beans;
import java.io.Serializable;
import org.springframework.lang.Nullable;
public class PropertyValue implements Serializable {
public PropertyValue(String name, @Nullable Object value) {}
public PropertyValue(PropertyValue original) {}
public PropertyValue(PropertyValue original, @Nullable Object newValue) {}
public String getName() {
return null;
}
public Object getValue() {
return null;
}
public PropertyValue getOriginalPropertyValue() {
return null;
}
public void setOptional(boolean optional) {}
public boolean isOptional() {
return false;
}
public synchronized boolean isConverted() {
return false;
}
public synchronized void setConvertedValue(@Nullable Object value) {}
public synchronized Object getConvertedValue() {
return null;
}
@Override
public boolean equals(@Nullable Object other) {
return false;
}
@Override
public int hashCode() {
return 0;
}
@Override
public String toString() {
return null;
}
}

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@@ -0,0 +1,46 @@
/*
* Copyright 2002-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package org.springframework.beans;
import java.util.Iterator;
import java.util.Spliterator;
import java.util.stream.Stream;
public interface PropertyValues extends Iterable<PropertyValue> {
@Override
default Iterator<PropertyValue> iterator() {
return null;
}
@Override
default Spliterator<PropertyValue> spliterator() {
return null;
}
default Stream<PropertyValue> stream() {
return null;
}
PropertyValue[] getPropertyValues();
PropertyValue getPropertyValue(String propertyName);
PropertyValues changesSince(PropertyValues old);
boolean contains(String propertyName);
boolean isEmpty();
}