From f84384fda86f5f608095d625206cfa096a850e04 Mon Sep 17 00:00:00 2001
From: Eli Hart <konakid@gmail.com>
Date: Thu, 13 Sep 2018 11:17:27 -0500
Subject: [PATCH] Add databinding option to not auto apply DoNotHash (#539)

---
 .../airbnb/epoxy/EpoxyDataBindingLayouts.java |  11 +
 .../airbnb/epoxy/EpoxyDataBindingPattern.java |  11 +
 .../airbnb/epoxy/DataBindingAttributeInfo.kt  |   4 +-
 .../com/airbnb/epoxy/DataBindingModelInfo.kt  |  10 +-
 .../com/airbnb/epoxy/DataBindingProcessor.kt  |  95 +++---
 .../main/java/com/airbnb/epoxy/KotlinUtils.kt |   2 +
 ...el_with_data_binding_without_donothash.xml |  22 ++
 .../airbnb/epoxy/DataBindingModelTest.java    |  25 ++
 ...ithDataBindingWithoutDonothashBinding.java | 169 +++++++++++
 ...aBindingWithoutDonothashBindingModel_.java | 270 ++++++++++++++++++
 10 files changed, 575 insertions(+), 44 deletions(-)
 create mode 100644 epoxy-processortest/src/main/res/layout/model_with_data_binding_without_donothash.xml
 create mode 100644 epoxy-processortest/src/test/resources/ModelWithDataBindingWithoutDonothashBinding.java
 create mode 100644 epoxy-processortest/src/test/resources/ModelWithDataBindingWithoutDonothashBindingModel_.java

diff --git a/epoxy-annotations/src/main/java/com/airbnb/epoxy/EpoxyDataBindingLayouts.java b/epoxy-annotations/src/main/java/com/airbnb/epoxy/EpoxyDataBindingLayouts.java
index 88ab0cb41f..21a9a836bc 100644
--- a/epoxy-annotations/src/main/java/com/airbnb/epoxy/EpoxyDataBindingLayouts.java
+++ b/epoxy-annotations/src/main/java/com/airbnb/epoxy/EpoxyDataBindingLayouts.java
@@ -23,4 +23,15 @@
 public @interface EpoxyDataBindingLayouts {
   /** A list of databinding layout resources that should have EpoxyModel's generated for them. */
   @LayoutRes int[] value();
+
+  /**
+     * If true, any variable whose type does not implement equals and hashcode will have the
+   * {@link EpoxyAttribute.Option#DoNotHash} behavior applied to them automatically.
+   * <p>
+   * This is generally helpful for listeners - other variables should almost always implement
+   * equals and hashcode.
+   * <p>
+   * For details on the nuances of this, see https://github.com/airbnb/epoxy/wiki/DoNotHash
+   */
+  boolean enableDoNotHash() default true;
 }
diff --git a/epoxy-annotations/src/main/java/com/airbnb/epoxy/EpoxyDataBindingPattern.java b/epoxy-annotations/src/main/java/com/airbnb/epoxy/EpoxyDataBindingPattern.java
index 60bb96bcd8..c4f42d3cf8 100644
--- a/epoxy-annotations/src/main/java/com/airbnb/epoxy/EpoxyDataBindingPattern.java
+++ b/epoxy-annotations/src/main/java/com/airbnb/epoxy/EpoxyDataBindingPattern.java
@@ -29,4 +29,15 @@
    * databinding layout, Epoxy will generate a HeaderBindingModel_ class for that layout.
    */
   String layoutPrefix();
+
+  /**
+   * If true, any variable whose type does not implement equals and hashcode will have the
+   * {@link EpoxyAttribute.Option#DoNotHash} behavior applied to them automatically.
+   * <p>
+   * This is generally helpful for listeners - other variables should almost always implement
+   * equals and hashcode.
+   * <p>
+   * For details on the nuances of this, see https://github.com/airbnb/epoxy/wiki/DoNotHash
+   */
+  boolean enableDoNotHash() default true;
 }
diff --git a/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingAttributeInfo.kt b/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingAttributeInfo.kt
index 1f8d8836cd..6274c5bc24 100644
--- a/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingAttributeInfo.kt
+++ b/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingAttributeInfo.kt
@@ -14,8 +14,8 @@ internal class DataBindingAttributeInfo(
         typeMirror = setterMethod.parameters[0].asType()
         modelName = modelInfo.generatedName.simpleName()
         packageName = modelInfo.generatedName.packageName()
-        useInHash = hashCodeValidator.implementsHashCodeAndEquals(typeMirror)
-        ignoreRequireHashCode = false
+        useInHash = !modelInfo.enableDoNotHash || hashCodeValidator.implementsHashCodeAndEquals(typeMirror)
+        ignoreRequireHashCode = true
         generateSetter = true
         generateGetter = true
         hasFinalModifier = false
diff --git a/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingModelInfo.kt b/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingModelInfo.kt
index 6c02e0badd..cf68551066 100644
--- a/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingModelInfo.kt
+++ b/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingModelInfo.kt
@@ -13,7 +13,8 @@ internal class DataBindingModelInfo(
     private val elementUtils: Elements,
     val layoutResource: ResourceValue,
     val moduleName: String,
-    private val layoutPrefix: String = ""
+    private val layoutPrefix: String = "",
+    val enableDoNotHash: Boolean
 ) : GeneratedModelInfo() {
     private val dataBindingClassName: ClassName
 
@@ -46,8 +47,8 @@ internal class DataBindingModelInfo(
         // This databinding class won't exist until the second round of annotation processing since
         // it is generated in the first round.
         val dataBindingClassElement = this.dataBindingClassElement ?: return false
-
         val hashCodeValidator = HashCodeValidator(typeUtils, elementUtils)
+
         dataBindingClassElement.executableElements()
             .filter { Utils.isSetterMethod(it) }
             .map {
@@ -57,6 +58,7 @@ internal class DataBindingModelInfo(
             .let {
                 addAttributes(it)
             }
+
         return true
     }
 
@@ -66,7 +68,7 @@ internal class DataBindingModelInfo(
     ): ClassName {
         val modelName = layoutResource.resourceName!!.toUpperCamelCase().plus(BINDING_SUFFIX)
 
-        return ClassName.get(moduleName + ".databinding", modelName)
+        return ClassName.get("$moduleName.databinding", modelName)
     }
 
     private fun buildGeneratedModelName(): ClassName {
@@ -81,7 +83,7 @@ internal class DataBindingModelInfo(
 
     companion object {
 
-        val BINDING_SUFFIX = "Binding"
+        const val BINDING_SUFFIX = "Binding"
 
         val FIELD_NAME_BLACKLIST = listOf(
             // Starting with Android plugin 3.1.0 nested DataBinding classes have a
diff --git a/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingProcessor.kt b/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingProcessor.kt
index 7eedab63f9..4d17ea69c3 100644
--- a/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingProcessor.kt
+++ b/epoxy-processor/src/main/java/com/airbnb/epoxy/DataBindingProcessor.kt
@@ -1,20 +1,21 @@
 package com.airbnb.epoxy
 
-import com.airbnb.epoxy.Utils.*
-import com.squareup.javapoet.*
+import com.airbnb.epoxy.Utils.getClassParamFromAnnotation
+import com.squareup.javapoet.ClassName
 import java.util.*
-import javax.annotation.processing.*
-import javax.lang.model.element.*
-import javax.lang.model.util.*
+import javax.annotation.processing.RoundEnvironment
+import javax.lang.model.element.VariableElement
+import javax.lang.model.util.Elements
+import javax.lang.model.util.Types
 
 internal class DataBindingProcessor(
-        private val elements: Elements,
-        private val types: Types,
-        private val errorLogger: ErrorLogger,
-        private val configManager: ConfigManager,
-        private val resourceProcessor: ResourceProcessor,
-        private val dataBindingModuleLookup: DataBindingModuleLookup,
-        private val modelWriter: GeneratedModelWriter
+    private val elements: Elements,
+    private val types: Types,
+    private val errorLogger: ErrorLogger,
+    private val configManager: ConfigManager,
+    private val resourceProcessor: ResourceProcessor,
+    private val dataBindingModuleLookup: DataBindingModuleLookup,
+    private val modelWriter: GeneratedModelWriter
 ) {
     private val modelsToWrite = ArrayList<DataBindingModelInfo>()
 
@@ -23,40 +24,58 @@ internal class DataBindingProcessor(
         roundEnv.getElementsAnnotatedWith(EpoxyDataBindingLayouts::class.java).forEach {
 
             val layoutResources = resourceProcessor
-                    .getLayoutsInAnnotation(it, EpoxyDataBindingLayouts::class.java)
+                .getLayoutsInAnnotation(it, EpoxyDataBindingLayouts::class.java)
 
             // Get the module name after parsing resources so we can use the resource classes to figure
             // out the module name
             val moduleName = dataBindingModuleLookup.getModuleName(it)
 
+            val enableDoNotHash =
+                it.annotation<EpoxyDataBindingLayouts>()?.enableDoNotHash == true
             layoutResources.mapTo(modelsToWrite) {
-                DataBindingModelInfo(types, elements, it, moduleName)
+                DataBindingModelInfo(
+                    typeUtils = types,
+                    elementUtils = elements,
+                    layoutResource = it,
+                    moduleName = moduleName,
+                    enableDoNotHash = enableDoNotHash
+                )
             }
         }
 
-        roundEnv.getElementsAnnotatedWith(EpoxyDataBindingPattern::class.java).forEach {
-            val patternAnnotation = it.getAnnotation(EpoxyDataBindingPattern::class.java)
+        roundEnv.getElementsAnnotatedWith(EpoxyDataBindingPattern::class.java).forEach { element ->
+            val patternAnnotation = element.getAnnotation(EpoxyDataBindingPattern::class.java)
 
             val layoutPrefix = patternAnnotation.layoutPrefix
             val rClassName = getClassParamFromAnnotation<EpoxyDataBindingPattern>(
-                    it,
-                    EpoxyDataBindingPattern::class.java,
-                    "rClass",
-                    types)
-                    ?: return@forEach
+                element,
+                EpoxyDataBindingPattern::class.java,
+                "rClass",
+                types
+            )
+                ?: return@forEach
 
             val moduleName = rClassName.packageName()
             val layoutClassName = ClassName.get(moduleName, "R", "layout")
+            val enableDoNotHash =
+                element.annotation<EpoxyDataBindingLayouts>()?.enableDoNotHash == true
 
             Utils.getElementByName(layoutClassName, elements, types)
-                    .enclosedElements
-                    .filterIsInstance<VariableElement>()
-                    .map { it.simpleName.toString() }
-                    .filter { it.startsWith(layoutPrefix) }
-                    .map { ResourceValue(layoutClassName, it, 0 /* value doesn't matter */) }
-                    .mapTo(modelsToWrite) {
-                        DataBindingModelInfo(types, elements, it, moduleName, layoutPrefix)
-                    }
+                .enclosedElements
+                .filterIsInstance<VariableElement>()
+                .map { it.simpleName.toString() }
+                .filter { it.startsWith(layoutPrefix) }
+                .map { ResourceValue(layoutClassName, it, 0 /* value doesn't matter */) }
+                .mapTo(modelsToWrite) {
+                    DataBindingModelInfo(
+                        typeUtils = types,
+                        elementUtils = elements,
+                        layoutResource = it,
+                        moduleName = moduleName,
+                        layoutPrefix = layoutPrefix,
+                        enableDoNotHash = enableDoNotHash
+                    )
+                }
         }
 
         val modelsWritten = resolveDataBindingClassesAndWriteJava()
@@ -79,15 +98,15 @@ internal class DataBindingProcessor(
 
     private fun resolveDataBindingClassesAndWriteJava(): List<DataBindingModelInfo> {
         return modelsToWrite
-                .filter { it.parseDataBindingClass() }
-                .onEach {
-                    try {
-                        modelWriter.generateClassForModel(it)
-                    } catch (e: Exception) {
-                        errorLogger.logError(e, "Error generating model classes")
-                    }
-
-                    modelsToWrite.remove(it)
+            .filter { it.parseDataBindingClass() }
+            .onEach {
+                try {
+                    modelWriter.generateClassForModel(it)
+                } catch (e: Exception) {
+                    errorLogger.logError(e, "Error generating model classes")
                 }
+
+                modelsToWrite.remove(it)
+            }
     }
 }
diff --git a/epoxy-processor/src/main/java/com/airbnb/epoxy/KotlinUtils.kt b/epoxy-processor/src/main/java/com/airbnb/epoxy/KotlinUtils.kt
index dc17638f88..de871c531c 100644
--- a/epoxy-processor/src/main/java/com/airbnb/epoxy/KotlinUtils.kt
+++ b/epoxy-processor/src/main/java/com/airbnb/epoxy/KotlinUtils.kt
@@ -159,6 +159,8 @@ fun Element.iterateSuperClasses(
     }
 }
 
+inline fun <reified T : Annotation> Element.annotation(): T? = getAnnotation(T::class.java)
+
 /**
  * Returns a list of annotations specs representing annotations on the given type element.
  *
diff --git a/epoxy-processortest/src/main/res/layout/model_with_data_binding_without_donothash.xml b/epoxy-processortest/src/main/res/layout/model_with_data_binding_without_donothash.xml
new file mode 100644
index 0000000000..829f70680a
--- /dev/null
+++ b/epoxy-processortest/src/main/res/layout/model_with_data_binding_without_donothash.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <data>
+
+        <variable
+            name="stringValue"
+            type="String" />
+
+        <variable
+            name="clickListener"
+            type="android.view.View.OnClickListener" />
+    </data>
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="40dp"
+        android:onClick="@{clickListener}"
+        android:text="@{stringValue}" />
+
+</layout>
\ No newline at end of file
diff --git a/epoxy-processortest/src/test/java/com/airbnb/epoxy/DataBindingModelTest.java b/epoxy-processortest/src/test/java/com/airbnb/epoxy/DataBindingModelTest.java
index 699ccb8836..ca815f2719 100644
--- a/epoxy-processortest/src/test/java/com/airbnb/epoxy/DataBindingModelTest.java
+++ b/epoxy-processortest/src/test/java/com/airbnb/epoxy/DataBindingModelTest.java
@@ -28,6 +28,7 @@ public class DataBindingModelTest {
       + "  public static final class layout {\n"
       + "    public static final int res = 0x7f040008;\n"
       + "    public static final int model_with_data_binding=0x7f040009;\n"
+      + "    public static final int model_with_data_binding_without_donothash=0x7f0f002b;\n"
       + "  }\n"
       + "  public static final class integer {\n"
       + "    public static final int res = 0x7f040004;\n"
@@ -66,6 +67,7 @@ public class DataBindingModelTest {
               + "  public static final int valueObject = 20;\n"
               + "  public static final int valueList = 21;\n"
               + "  public static final int stringValue = 22;\n"
+              + "  public static final int clickListener = 23;\n"
               + "}");
 
   @Test
@@ -118,4 +120,27 @@ public void testFullyGeneratedModel() {
         .and()
         .generatesSources(generatedModel);
   }
+
+  @Test
+  public void testFullyGeneratedModelWithoutDoNotHash() {
+    JavaFileObject packageInfo = JavaFileObjects
+        .forSourceString("com.airbnb.epoxy.package-info",
+            "@EpoxyDataBindingLayouts(value = {R.layout"
+                + ".model_with_data_binding_without_donothash}, enableDoNotHash = false)\n"
+                + "package com.airbnb.epoxy;\n"
+        );
+
+    JavaFileObject binding = JavaFileObjects
+        .forResource("ModelWithDataBindingWithoutDonothashBinding.java");
+
+    JavaFileObject generatedModel =
+        JavaFileObjects.forResource("ModelWithDataBindingWithoutDonothashBindingModel_.java");
+
+    assert_().about(javaSources())
+        .that(asList(packageInfo, binding, BR_CLASS, R))
+        .processedWith(new EpoxyProcessor())
+        .compilesWithoutError()
+        .and()
+        .generatesSources(generatedModel);
+  }
 }
diff --git a/epoxy-processortest/src/test/resources/ModelWithDataBindingWithoutDonothashBinding.java b/epoxy-processortest/src/test/resources/ModelWithDataBindingWithoutDonothashBinding.java
new file mode 100644
index 0000000000..800eb7e7de
--- /dev/null
+++ b/epoxy-processortest/src/test/resources/ModelWithDataBindingWithoutDonothashBinding.java
@@ -0,0 +1,169 @@
+package com.airbnb.epoxy.databinding;
+import com.airbnb.epoxy.R;
+import com.airbnb.epoxy.BR;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.view.View;
+@SuppressWarnings("unchecked")
+public class ModelWithDataBindingWithoutDonothashBinding extends android.databinding.ViewDataBinding  {
+
+  @Nullable
+  private static final android.databinding.ViewDataBinding.IncludedLayouts sIncludes;
+  @Nullable
+  private static final android.util.SparseIntArray sViewsWithIds;
+  static {
+    sIncludes = null;
+    sViewsWithIds = null;
+  }
+  // views
+  @NonNull
+  public final android.widget.Button button;
+  // variables
+  @Nullable
+  private java.lang.String mStringValue;
+  @Nullable
+  private android.view.View.OnClickListener mClickListener;
+  // values
+  // listeners
+  // Inverse Binding Event Handlers
+
+  public ModelWithDataBindingWithoutDonothashBinding(@NonNull android.databinding.DataBindingComponent bindingComponent, @NonNull View root) {
+    super(bindingComponent, root, 0);
+    final Object[] bindings = mapBindings(bindingComponent, root, 1, sIncludes, sViewsWithIds);
+    this.button = (android.widget.Button) bindings[0];
+    this.button.setTag(null);
+    setRootTag(root);
+    // listeners
+    invalidateAll();
+  }
+
+  @Override
+  public void invalidateAll() {
+    synchronized(this) {
+      mDirtyFlags = 0x4L;
+    }
+    requestRebind();
+  }
+
+  @Override
+  public boolean hasPendingBindings() {
+    synchronized(this) {
+      if (mDirtyFlags != 0) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  @Override
+  public boolean setVariable(int variableId, @Nullable Object variable)  {
+    boolean variableSet = true;
+    if (BR.stringValue == variableId) {
+      setStringValue((java.lang.String) variable);
+    }
+    else if (BR.clickListener == variableId) {
+      setClickListener((android.view.View.OnClickListener) variable);
+    }
+    else {
+      variableSet = false;
+    }
+    return variableSet;
+  }
+
+  public void setStringValue(@Nullable java.lang.String StringValue) {
+    this.mStringValue = StringValue;
+    synchronized(this) {
+      mDirtyFlags |= 0x1L;
+    }
+    notifyPropertyChanged(BR.stringValue);
+    super.requestRebind();
+  }
+  @Nullable
+  public java.lang.String getStringValue() {
+    return mStringValue;
+  }
+  public void setClickListener(@Nullable android.view.View.OnClickListener ClickListener) {
+    this.mClickListener = ClickListener;
+    synchronized(this) {
+      mDirtyFlags |= 0x2L;
+    }
+    notifyPropertyChanged(BR.clickListener);
+    super.requestRebind();
+  }
+  @Nullable
+  public android.view.View.OnClickListener getClickListener() {
+    return mClickListener;
+  }
+
+  @Override
+  protected boolean onFieldChange(int localFieldId, Object object, int fieldId) {
+    switch (localFieldId) {
+    }
+    return false;
+  }
+
+  @Override
+  protected void executeBindings() {
+    long dirtyFlags = 0;
+    synchronized(this) {
+      dirtyFlags = mDirtyFlags;
+      mDirtyFlags = 0;
+    }
+    java.lang.String stringValue = mStringValue;
+    android.view.View.OnClickListener clickListener = mClickListener;
+
+    if ((dirtyFlags & 0x5L) != 0) {
+    }
+    if ((dirtyFlags & 0x6L) != 0) {
+    }
+    // batch finished
+    if ((dirtyFlags & 0x6L) != 0) {
+      // api target 1
+
+      this.button.setOnClickListener(clickListener);
+    }
+    if ((dirtyFlags & 0x5L) != 0) {
+      // api target 1
+
+      android.databinding.adapters.TextViewBindingAdapter.setText(this.button, stringValue);
+    }
+  }
+  // Listener Stub Implementations
+  // callback impls
+  // dirty flag
+  private  long mDirtyFlags = 0xffffffffffffffffL;
+
+  @NonNull
+  public static ModelWithDataBindingWithoutDonothashBinding inflate(@NonNull android.view.LayoutInflater inflater, @Nullable android.view.ViewGroup root, boolean attachToRoot) {
+    return inflate(inflater, root, attachToRoot, android.databinding.DataBindingUtil.getDefaultComponent());
+  }
+  @NonNull
+  public static ModelWithDataBindingWithoutDonothashBinding inflate(@NonNull android.view.LayoutInflater inflater, @Nullable android.view.ViewGroup root, boolean attachToRoot, @Nullable android.databinding.DataBindingComponent bindingComponent) {
+    return android.databinding.DataBindingUtil.<ModelWithDataBindingWithoutDonothashBinding>inflate(inflater, com.airbnb.epoxy.R.layout.model_with_data_binding_without_donothash, root, attachToRoot, bindingComponent);
+  }
+  @NonNull
+  public static ModelWithDataBindingWithoutDonothashBinding inflate(@NonNull android.view.LayoutInflater inflater) {
+    return inflate(inflater, android.databinding.DataBindingUtil.getDefaultComponent());
+  }
+  @NonNull
+  public static ModelWithDataBindingWithoutDonothashBinding inflate(@NonNull android.view.LayoutInflater inflater, @Nullable android.databinding.DataBindingComponent bindingComponent) {
+    return bind(inflater.inflate(com.airbnb.epoxy.R.layout.model_with_data_binding_without_donothash, null, false), bindingComponent);
+  }
+  @NonNull
+  public static ModelWithDataBindingWithoutDonothashBinding bind(@NonNull android.view.View view) {
+    return bind(view, android.databinding.DataBindingUtil.getDefaultComponent());
+  }
+  @NonNull
+  public static ModelWithDataBindingWithoutDonothashBinding bind(@NonNull android.view.View view, @Nullable android.databinding.DataBindingComponent bindingComponent) {
+    if (!"layout/model_with_data_binding_without_donothash_0".equals(view.getTag())) {
+      throw new RuntimeException("view tag isn't correct on view:" + view.getTag());
+    }
+    return new ModelWithDataBindingWithoutDonothashBinding(bindingComponent, view);
+  }
+    /* flag mapping
+        flag 0 (0x1L): stringValue
+        flag 1 (0x2L): clickListener
+        flag 2 (0x3L): null
+    flag mapping end*/
+  //end
+}
\ No newline at end of file
diff --git a/epoxy-processortest/src/test/resources/ModelWithDataBindingWithoutDonothashBindingModel_.java b/epoxy-processortest/src/test/resources/ModelWithDataBindingWithoutDonothashBindingModel_.java
new file mode 100644
index 0000000000..0f23f27b96
--- /dev/null
+++ b/epoxy-processortest/src/test/resources/ModelWithDataBindingWithoutDonothashBindingModel_.java
@@ -0,0 +1,270 @@
+package com.airbnb.epoxy;
+
+import android.databinding.ViewDataBinding;
+import android.support.annotation.LayoutRes;
+import android.support.annotation.Nullable;
+import android.view.View;
+import java.lang.CharSequence;
+import java.lang.IllegalStateException;
+import java.lang.Number;
+import java.lang.Object;
+import java.lang.Override;
+import java.lang.String;
+
+/**
+ * Generated file. Do not modify! */
+public class ModelWithDataBindingWithoutDonothashBindingModel_ extends DataBindingEpoxyModel implements GeneratedModel<DataBindingEpoxyModel.DataBindingHolder>, ModelWithDataBindingWithoutDonothashBindingModelBuilder {
+  private OnModelBoundListener<ModelWithDataBindingWithoutDonothashBindingModel_, DataBindingEpoxyModel.DataBindingHolder> onModelBoundListener_epoxyGeneratedModel;
+
+  private OnModelUnboundListener<ModelWithDataBindingWithoutDonothashBindingModel_, DataBindingEpoxyModel.DataBindingHolder> onModelUnboundListener_epoxyGeneratedModel;
+
+  private String stringValue;
+
+  private View.OnClickListener clickListener;
+
+  @Override
+  public void addTo(EpoxyController controller) {
+    super.addTo(controller);
+    addWithDebugValidation(controller);
+  }
+
+  @Override
+  public void handlePreBind(final EpoxyViewHolder holder,
+      final DataBindingEpoxyModel.DataBindingHolder object, final int position) {
+    validateStateHasNotChangedSinceAdded("The model was changed between being added to the controller and being bound.", position);
+  }
+
+  @Override
+  public void handlePostBind(final DataBindingEpoxyModel.DataBindingHolder object, int position) {
+    if (onModelBoundListener_epoxyGeneratedModel != null) {
+      onModelBoundListener_epoxyGeneratedModel.onModelBound(this, object, position);
+    }
+    validateStateHasNotChangedSinceAdded("The model was changed during the bind call.", position);
+  }
+
+  /**
+   * Register a listener that will be called when this model is bound to a view.
+   * <p>
+   * The listener will contribute to this model's hashCode state per the {@link
+   * com.airbnb.epoxy.EpoxyAttribute.Option#DoNotHash} rules.
+   * <p>
+   * You may clear the listener by setting a null value, or by calling {@link #reset()} */
+  public ModelWithDataBindingWithoutDonothashBindingModel_ onBind(
+      OnModelBoundListener<ModelWithDataBindingWithoutDonothashBindingModel_, DataBindingEpoxyModel.DataBindingHolder> listener) {
+    onMutation();
+    this.onModelBoundListener_epoxyGeneratedModel = listener;
+    return this;
+  }
+
+  @Override
+  public void unbind(DataBindingEpoxyModel.DataBindingHolder object) {
+    super.unbind(object);
+    if (onModelUnboundListener_epoxyGeneratedModel != null) {
+      onModelUnboundListener_epoxyGeneratedModel.onModelUnbound(this, object);
+    }
+  }
+
+  /**
+   * Register a listener that will be called when this model is unbound from a view.
+   * <p>
+   * The listener will contribute to this model's hashCode state per the {@link
+   * com.airbnb.epoxy.EpoxyAttribute.Option#DoNotHash} rules.
+   * <p>
+   * You may clear the listener by setting a null value, or by calling {@link #reset()} */
+  public ModelWithDataBindingWithoutDonothashBindingModel_ onUnbind(
+      OnModelUnboundListener<ModelWithDataBindingWithoutDonothashBindingModel_, DataBindingEpoxyModel.DataBindingHolder> listener) {
+    onMutation();
+    this.onModelUnboundListener_epoxyGeneratedModel = listener;
+    return this;
+  }
+
+  public ModelWithDataBindingWithoutDonothashBindingModel_ stringValue(String stringValue) {
+    onMutation();
+    this.stringValue = stringValue;
+    return this;
+  }
+
+  public String stringValue() {
+    return stringValue;
+  }
+
+  /**
+   * Set a click listener that will provide the parent view, model, and adapter position of the clicked view. This will clear the normal View.OnClickListener if one has been set */
+  public ModelWithDataBindingWithoutDonothashBindingModel_ clickListener(
+      final OnModelClickListener<ModelWithDataBindingWithoutDonothashBindingModel_, DataBindingEpoxyModel.DataBindingHolder> clickListener) {
+    onMutation();
+    if (clickListener == null) {
+      this.clickListener = null;
+    }
+    else {
+      this.clickListener = new WrappedEpoxyModelClickListener(clickListener);
+    }
+    return this;
+  }
+
+  public ModelWithDataBindingWithoutDonothashBindingModel_ clickListener(
+      View.OnClickListener clickListener) {
+    onMutation();
+    this.clickListener = clickListener;
+    return this;
+  }
+
+  public View.OnClickListener clickListener() {
+    return clickListener;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ id(long id) {
+    super.id(id);
+    return this;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ id(@Nullable Number... arg0) {
+    super.id(arg0);
+    return this;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ id(long id1, long id2) {
+    super.id(id1, id2);
+    return this;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ id(@Nullable CharSequence arg0) {
+    super.id(arg0);
+    return this;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ id(@Nullable CharSequence arg0,
+      @Nullable CharSequence... arg1) {
+    super.id(arg0, arg1);
+    return this;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ id(@Nullable CharSequence arg0,
+      long arg1) {
+    super.id(arg0, arg1);
+    return this;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ layout(@LayoutRes int arg0) {
+    super.layout(arg0);
+    return this;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ spanSizeOverride(
+      @Nullable EpoxyModel.SpanSizeOverrideCallback arg0) {
+    super.spanSizeOverride(arg0);
+    return this;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ show() {
+    super.show();
+    return this;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ show(boolean show) {
+    super.show(show);
+    return this;
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ hide() {
+    super.hide();
+    return this;
+  }
+
+  @Override
+  @LayoutRes
+  protected int getDefaultLayout() {
+    return R.layout.model_with_data_binding_without_donothash;
+  }
+
+  @Override
+  protected void setDataBindingVariables(ViewDataBinding binding) {
+    if (!binding.setVariable(BR.stringValue, stringValue)) {
+      throw new IllegalStateException("The attribute stringValue was defined in your data binding model (com.airbnb.epoxy.DataBindingEpoxyModel) but a data variable of that name was not found in the layout.");
+    }
+    if (!binding.setVariable(BR.clickListener, clickListener)) {
+      throw new IllegalStateException("The attribute clickListener was defined in your data binding model (com.airbnb.epoxy.DataBindingEpoxyModel) but a data variable of that name was not found in the layout.");
+    }
+  }
+
+  @Override
+  protected void setDataBindingVariables(ViewDataBinding binding, EpoxyModel previousModel) {
+    if (!(previousModel instanceof ModelWithDataBindingWithoutDonothashBindingModel_)) {
+      setDataBindingVariables(binding);
+      return;
+    }
+    ModelWithDataBindingWithoutDonothashBindingModel_ that = (ModelWithDataBindingWithoutDonothashBindingModel_) previousModel;
+    if ((stringValue != null ? !stringValue.equals(that.stringValue) : that.stringValue != null)) {
+      binding.setVariable(BR.stringValue, stringValue);
+    }
+    if ((clickListener != null ? !clickListener.equals(that.clickListener) : that.clickListener != null)) {
+      binding.setVariable(BR.clickListener, clickListener);
+    }
+  }
+
+  @Override
+  public ModelWithDataBindingWithoutDonothashBindingModel_ reset() {
+    onModelBoundListener_epoxyGeneratedModel = null;
+    onModelUnboundListener_epoxyGeneratedModel = null;
+    this.stringValue = null;
+    this.clickListener = null;
+    super.reset();
+    return this;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (o == this) {
+      return true;
+    }
+    if (!(o instanceof ModelWithDataBindingWithoutDonothashBindingModel_)) {
+      return false;
+    }
+    if (!super.equals(o)) {
+      return false;
+    }
+    ModelWithDataBindingWithoutDonothashBindingModel_ that = (ModelWithDataBindingWithoutDonothashBindingModel_) o;
+    if (((onModelBoundListener_epoxyGeneratedModel == null) != (that.onModelBoundListener_epoxyGeneratedModel == null))) {
+      return false;
+    }
+    if (((onModelUnboundListener_epoxyGeneratedModel == null) != (that.onModelUnboundListener_epoxyGeneratedModel == null))) {
+      return false;
+    }
+    if ((stringValue != null ? !stringValue.equals(that.stringValue) : that.stringValue != null)) {
+      return false;
+    }
+    if ((clickListener != null ? !clickListener.equals(that.clickListener) : that.clickListener != null)) {
+      return false;
+    }
+    return true;
+  }
+
+  @Override
+  public int hashCode() {
+    int result = super.hashCode();
+    result = 31 * result + (onModelBoundListener_epoxyGeneratedModel != null ? 1 : 0);
+    result = 31 * result + (onModelUnboundListener_epoxyGeneratedModel != null ? 1 : 0);
+    result = 31 * result + (stringValue != null ? stringValue.hashCode() : 0);
+    result = 31 * result + (clickListener != null ? clickListener.hashCode() : 0);
+    return result;
+  }
+
+  @Override
+  public String toString() {
+    return "ModelWithDataBindingWithoutDonothashBindingModel_{" +
+        "stringValue=" + stringValue +
+        ", clickListener=" + clickListener +
+        "}" + super.toString();
+  }
+}
\ No newline at end of file