com.avaje.ebean.bean.EntityBeanIntercept Maven / Gradle / Ivy
package com.avaje.ebean.bean;
import com.avaje.ebean.Ebean;
import com.avaje.ebean.ValuePair;
import javax.persistence.EntityNotFoundException;
import javax.persistence.PersistenceException;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.Serializable;
import java.math.BigDecimal;
import java.net.URL;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
/**
* This is the object added to every entity bean using byte code enhancement.
*
* This provides the mechanisms to support deferred fetching of reference beans
* and oldValues generation for concurrency checking.
*
*/
public final class EntityBeanIntercept implements Serializable {
private static final long serialVersionUID = -3664031775464862649L;
private static final int STATE_NEW = 0;
private static final int STATE_REFERENCE = 1;
private static final int STATE_LOADED = 2;
private transient NodeUsageCollector nodeUsageCollector;
private transient PropertyChangeSupport pcs;
private transient PersistenceContext persistenceContext;
private transient BeanLoader beanLoader;
private String ebeanServerName;
/**
* The actual entity bean that 'owns' this intercept.
*/
private final EntityBean owner;
private EntityBean embeddedOwner;
private int embeddedOwnerIndex;
/**
* One of NEW, REF, UPD.
*/
private int state;
private boolean readOnly;
private boolean dirty;
/**
* Flag set to disable lazy loading - typically for SQL "report" type entity beans.
*/
private boolean disableLazyLoad;
/**
* Flag set when lazy loading failed due to the underlying bean being deleted in the DB.
*/
private boolean lazyLoadFailure;
/**
* Used when a bean is partially filled.
*/
private final boolean[] loadedProps;
private boolean fullyLoadedBean;
/**
* Set of changed properties.
*/
private boolean[] changedProps;
/**
* Flags indicating if a property is a dirty embedded bean. Used to distingush
* between an embedded bean being completely overwritten and one of its
* embedded properties being made dirty.
*/
private boolean[] embeddedDirty;
private Object[] origValues;
private int lazyLoadProperty = -1;
private Object ownerId;
/**
* Create a intercept with a given entity.
*
* Refer to agent ProxyConstructor.
*
*/
public EntityBeanIntercept(Object ownerBean) {
this.owner = (EntityBean) ownerBean;
this.loadedProps = new boolean[owner._ebean_getPropertyNames().length];
}
/**
* Return the 'owning' entity bean.
*/
public EntityBean getOwner() {
return owner;
}
/**
* Return the persistenceContext.
*/
public PersistenceContext getPersistenceContext() {
return persistenceContext;
}
/**
* Set the persistenceContext.
*/
public void setPersistenceContext(PersistenceContext persistenceContext) {
this.persistenceContext = persistenceContext;
}
/**
* Add a property change listener for this entity bean.
*/
public void addPropertyChangeListener(PropertyChangeListener listener) {
if (pcs == null) {
pcs = new PropertyChangeSupport(owner);
}
pcs.addPropertyChangeListener(listener);
}
/**
* Add a property change listener for this entity bean for a specific
* property.
*/
public void addPropertyChangeListener(String propertyName, PropertyChangeListener listener) {
if (pcs == null) {
pcs = new PropertyChangeSupport(owner);
}
pcs.addPropertyChangeListener(propertyName, listener);
}
/**
* Remove a property change listener for this entity bean.
*/
public void removePropertyChangeListener(PropertyChangeListener listener) {
if (pcs != null) {
pcs.removePropertyChangeListener(listener);
}
}
/**
* Remove a property change listener for this entity bean for a specific
* property.
*/
public void removePropertyChangeListener(String propertyName, PropertyChangeListener listener) {
if (pcs != null) {
pcs.removePropertyChangeListener(propertyName, listener);
}
}
/**
* Turn on profile collection.
*/
public void setNodeUsageCollector(NodeUsageCollector usageCollector) {
this.nodeUsageCollector = usageCollector;
}
/**
* Return the owning bean for an embedded bean.
*/
public Object getEmbeddedOwner() {
return embeddedOwner;
}
/**
* Return the property index (for the parent) of this embedded bean.
*/
public int getEmbeddedOwnerIndex() {
return embeddedOwnerIndex;
}
/**
* Set the embedded beans owning bean.
*/
public void setEmbeddedOwner(EntityBean parentBean, int embeddedOwnerIndex) {
this.embeddedOwner = parentBean;
this.embeddedOwnerIndex = embeddedOwnerIndex;
}
/**
* Set the BeanLoader with PersistenceContext.
*/
public void setBeanLoader(BeanLoader beanLoader, PersistenceContext ctx) {
this.beanLoader = beanLoader;
this.persistenceContext = ctx;
this.ebeanServerName = beanLoader.getName();
}
/**
* Set the BeanLoader.
*/
public void setBeanLoader(BeanLoader beanLoader) {
this.beanLoader = beanLoader;
this.ebeanServerName = beanLoader.getName();
}
public boolean isFullyLoadedBean() {
return fullyLoadedBean;
}
public void setFullyLoadedBean(boolean fullyLoadedBean) {
this.fullyLoadedBean = fullyLoadedBean;
}
/**
* Check each property to see if the bean is partially loaded.
*/
public boolean isPartial() {
for (int i = 0; i < loadedProps.length; i++) {
if (!loadedProps[i]) {
return true;
}
}
return false;
}
/**
* Return true if this bean has been directly modified (it has oldValues) or
* if any embedded beans are either new or dirty (and hence need saving).
*/
public boolean isDirty() {
return dirty;
}
/**
* Called by an embedded bean onto its owner.
*/
public void setEmbeddedDirty(int embeddedProperty) {
this.dirty = true;
setEmbeddedPropertyDirty(embeddedProperty);
}
public void setDirty(boolean dirty) {
this.dirty = dirty;
}
/**
* Return true if this entity bean is new and not yet saved.
*/
public boolean isNew() {
return state == STATE_NEW;
}
/**
* Return true if the entity bean is new or dirty (and should be saved).
*/
public boolean isNewOrDirty() {
return isNew() || isDirty();
}
/**
* Return true if only the Id property has been loaded.
*/
public boolean hasIdOnly(int idIndex) {
for (int i = 0; i < loadedProps.length; i++) {
if (i == idIndex) {
if (!loadedProps[i]) return false;
} else if (loadedProps[i]) {
return false;
}
}
return true;
}
/**
* Return true if the entity is a reference.
*/
public boolean isReference() {
return state == STATE_REFERENCE;
}
/**
* Set this as a reference object.
*/
public void setReference(int idPos) {
state = STATE_REFERENCE;
if (idPos > -1) {
// For cases where properties are set on constructor
// set every non Id property to unloaded (for lazy loading)
for (int i=0; i< loadedProps.length; i++) {
if (i != idPos) {
loadedProps[i] = false;
}
}
}
}
/**
* Return true if the bean should be treated as readOnly. If a setter method
* is called when it is readOnly an Exception is thrown.
*/
public boolean isReadOnly() {
return readOnly;
}
/**
* Set the readOnly status. If readOnly then calls to setter methods through
* an exception.
*/
public void setReadOnly(boolean readOnly) {
this.readOnly = readOnly;
}
/**
* Return true if the entity has been loaded.
*/
public boolean isLoaded() {
return state == STATE_LOADED;
}
/**
* Set the loaded state to true.
*
* Calls to setter methods after the bean is loaded can result in 'Old Values'
* being created to support ConcurrencyMode.ALL
*
*
* Worth noting that this is also set after a insert/update. By doing so it
* 'resets' the bean for making further changes and saving again.
*
*/
public void setLoaded() {
this.state = STATE_LOADED;
this.owner._ebean_setEmbeddedLoaded();
this.lazyLoadProperty = -1;
this.origValues = null;
this.changedProps = null;
this.dirty = false;
}
/**
* When finished loading for lazy or refresh on an already partially populated
* bean.
*/
public void setLoadedLazy() {
this.state = STATE_LOADED;
this.lazyLoadProperty = -1;
}
/**
* Set lazy load failure flag.
*/
public void setLazyLoadFailure(Object ownerId) {
this.lazyLoadFailure = true;
this.ownerId = ownerId;
}
/**
* Return true if the bean is marked as having failed lazy loading.
*/
public boolean isLazyLoadFailure() {
return lazyLoadFailure;
}
/**
* Return true if lazy loading is disabled.
*/
public boolean isDisableLazyLoad() {
return disableLazyLoad;
}
/**
* Set true to turn off lazy loading.
*
* Typically used to disable lazy loading on SQL based report beans.
*
*/
public void setDisableLazyLoad(boolean disableLazyLoad) {
this.disableLazyLoad = disableLazyLoad;
}
/**
* Set the loaded status for the embedded bean.
*/
public void setEmbeddedLoaded(Object embeddedBean) {
if (embeddedBean instanceof EntityBean) {
EntityBean eb = (EntityBean) embeddedBean;
eb._ebean_getIntercept().setLoaded();
}
}
/**
* Return true if the embedded bean is new or dirty and hence needs saving.
*/
public boolean isEmbeddedNewOrDirty(Object embeddedBean) {
if (embeddedBean == null) {
// if it was previously set then the owning bean would
// have oldValues containing the previous embedded bean
return false;
}
if (embeddedBean instanceof EntityBean) {
return ((EntityBean) embeddedBean)._ebean_getIntercept().isNewOrDirty();
} else {
// non-enhanced so must assume it is new and needs to be saved
return true;
}
}
/**
* Return the original value that was changed via an update.
*/
public Object getOrigValue(int propertyIndex) {
if (origValues == null) {
return null;
}
return origValues[propertyIndex];
}
/**
* Finds the index position of a given property. Returns -1 if the property
* can not be found.
*/
public int findProperty(String propertyName) {
String[] names = owner._ebean_getPropertyNames();
for (int i = 0; i < names.length; i++) {
if (names[i].equals(propertyName)) {
return i;
}
}
return -1;
}
/**
* Return the property name for the given property.
*/
public String getProperty(int propertyIndex) {
if (propertyIndex == -1) {
return null;
}
return owner._ebean_getPropertyName(propertyIndex);
}
/**
* Return the number of properties.s
*/
public int getPropertyLength() {
return owner._ebean_getPropertyNames().length;
}
/**
* Set the loaded state of the property given it's name.
*/
public void setPropertyLoaded(String propertyName, boolean loaded) {
int position = findProperty(propertyName);
if (position == -1) {
throw new IllegalArgumentException("Property "+propertyName+" not found");
}
loadedProps[position] = loaded;
}
/**
* Set the property to be treated as unloaded. Used for properties initialised in default
* constructor.
*/
public void setPropertyUnloaded(int propertyIndex) {
loadedProps[propertyIndex] = false;
}
/**
* Set the property to be loaded.
*/
public void setLoadedProperty(int propertyIndex) {
loadedProps[propertyIndex] = true;
}
/**
* Return true if the property is loaded.
*/
public boolean isLoadedProperty(int propertyIndex) {
return loadedProps[propertyIndex];
}
/**
* Return true if the property is considered changed.
*/
public boolean isChangedProperty(int propertyIndex) {
return (changedProps != null && changedProps[propertyIndex]);
}
/**
* Return true if the property was changed or if it is embedded and one of its
* embedded properties is dirty.
*/
public boolean isDirtyProperty(int propertyIndex) {
return (changedProps != null && changedProps[propertyIndex]
|| embeddedDirty != null && embeddedDirty[propertyIndex]);
}
/**
* Explicitly mark a property as having been changed.
*/
public void markPropertyAsChanged(int propertyIndex) {
setChangedProperty(propertyIndex);
setDirty(true);
}
public void setChangedProperty(int propertyIndex) {
if (changedProps == null) {
changedProps = new boolean[owner._ebean_getPropertyNames().length];
}
changedProps[propertyIndex] = true;
}
/**
* Set that an embedded bean has had one of its properties changed.
*/
private void setEmbeddedPropertyDirty(int propertyIndex) {
if (embeddedDirty == null) {
embeddedDirty = new boolean[owner._ebean_getPropertyNames().length];
}
embeddedDirty[propertyIndex] = true;
}
private void setOriginalValue(int propertyIndex, Object value) {
if (origValues == null) {
origValues = new Object[owner._ebean_getPropertyNames().length];
}
if (origValues[propertyIndex] == null) {
origValues[propertyIndex] = value;
}
}
/**
* For forced update on a 'New' bean set all the loaded properties to changed.
*/
public void setNewBeanForUpdate() {
if (changedProps == null) {
changedProps = new boolean[owner._ebean_getPropertyNames().length];
}
for (int i=0; i< loadedProps.length; i++) {
if (loadedProps[i]) {
changedProps[i] = true;
}
}
setDirty(true);
}
/**
* Return the set of property names for a partially loaded bean.
*/
public Set getLoadedPropertyNames() {
if (fullyLoadedBean) {
return null;
}
Set props = new LinkedHashSet();
for (int i=0; i getDirtyPropertyNames() {
Set props = new LinkedHashSet();
addDirtyPropertyNames(props, null);
return props;
}
/**
* Recursively add dirty properties.
*/
public void addDirtyPropertyNames(Set props, String prefix) {
int len = getPropertyLength();
for (int i = 0; i < len; i++) {
if (changedProps != null && changedProps[i]) {
// the property has been changed on this bean
String propName = (prefix == null ? getProperty(i) : prefix + getProperty(i));
props.add(propName);
} else if (embeddedDirty != null && embeddedDirty[i]) {
// an embedded property has been changed - recurse
EntityBean embeddedBean = (EntityBean)owner._ebean_getField(i);
embeddedBean._ebean_getIntercept().addDirtyPropertyNames(props, getProperty(i)+".");
}
}
}
/**
* Return true if any of the given property names are dirty.
*/
public boolean hasDirtyProperty(Set propertyNames) {
String[] names = owner._ebean_getPropertyNames();
int len = getPropertyLength();
for (int i = 0; i < len; i++) {
if (changedProps != null && changedProps[i]) {
// the property has been changed on this bean
if (propertyNames.contains(names[i])) {
return true;
}
} else if (embeddedDirty != null && embeddedDirty[i]) {
if (propertyNames.contains(names[i])) {
return true;
}
}
}
return false;
}
/**
* Return a map of dirty properties with their new and old values.
*/
public Map getDirtyValues() {
Map dirtyValues = new LinkedHashMap();
addDirtyPropertyValues(dirtyValues, null);
return dirtyValues;
}
/**
* Recursively add dirty properties.
*/
public void addDirtyPropertyValues(Map dirtyValues, String prefix) {
int len = getPropertyLength();
for (int i = 0; i < len; i++) {
if (changedProps != null && changedProps[i]) {
// the property has been changed on this bean
String propName = (prefix == null ? getProperty(i) : prefix + getProperty(i));
Object newVal = owner._ebean_getField(i);
Object oldVal = getOrigValue(i);
dirtyValues.put(propName, new ValuePair(newVal, oldVal));
} else if (embeddedDirty != null && embeddedDirty[i]) {
// an embedded property has been changed - recurse
EntityBean embeddedBean = (EntityBean)owner._ebean_getField(i);
embeddedBean._ebean_getIntercept().addDirtyPropertyValues(dirtyValues, getProperty(i) + ".");
}
}
}
/**
* Return a dirty property hash taking into account embedded beans.
*/
public int getDirtyPropertyHash() {
return addDirtyPropertyHash(37);
}
/**
* Add and return a dirty property hash recursing into embedded beans.
*/
public int addDirtyPropertyHash(int hash) {
int len = getPropertyLength();
for (int i = 0; i < len; i++) {
if (changedProps != null && changedProps[i]) {
// the property has been changed on this bean
hash = hash * 31 + (i+1);
} else if (embeddedDirty != null && embeddedDirty[i]) {
// an embedded property has been changed - recurse
EntityBean embeddedBean = (EntityBean)owner._ebean_getField(i);
hash = hash * 31 + embeddedBean._ebean_getIntercept().addDirtyPropertyHash(hash);
}
}
return hash;
}
/**
* Return a loaded property hash.
*/
public int getLoadedPropertyHash() {
int hash = 37;
int len = getPropertyLength();
for (int i = 0; i < len; i++) {
if (isLoadedProperty(i)) {
hash = hash * 31 + (i+1);
}
}
return hash;
}
/**
* Return the set of property names for changed properties.
*/
public boolean[] getChanged() {
return changedProps;
}
public boolean[] getLoaded() {
return loadedProps;
}
/**
* Return the index of the property that triggered the lazy load.
*/
public int getLazyLoadPropertyIndex() {
return lazyLoadProperty;
}
/**
* Return the property that triggered the lazy load.
*/
public String getLazyLoadProperty() {
return getProperty(lazyLoadProperty);
}
/**
* Load the bean when it is a reference.
*/
protected void loadBean(int loadProperty) {
synchronized (this) {
if (beanLoader == null) {
BeanLoader serverLoader = (BeanLoader) Ebean.getServer(ebeanServerName);
if (serverLoader == null) {
throw new PersistenceException("Server [" + ebeanServerName + "] was not found?");
}
// For stand alone reference bean or after deserialisation lazy load
// using the ebeanServer. Synchronise only on the bean.
loadBeanInternal(loadProperty, serverLoader);
return;
}
}
synchronized (beanLoader) {
// Lazy loading using LoadBeanContext which supports batch loading
// Synchronise on the beanLoader (a 'node' of the LoadBeanContext 'tree')
loadBeanInternal(loadProperty, beanLoader);
}
}
/**
* Invoke the lazy loading. This method is synchronised externally.
*/
private void loadBeanInternal(int loadProperty, BeanLoader loader) {
if (loadedProps == null || loadedProps[loadProperty]) {
// race condition where multiple threads calling preGetter concurrently
return;
}
if (lazyLoadFailure) {
// failed when batch lazy loaded by another bean in the batch
throw new EntityNotFoundException("Lazy loading failed on type:" + owner.getClass().getName() + " id:" + ownerId + " - Bean has been deleted");
}
if (lazyLoadProperty == -1) {
lazyLoadProperty = loadProperty;
if (nodeUsageCollector != null) {
nodeUsageCollector.setLoadProperty(getProperty(lazyLoadProperty));
}
loader.loadBean(this);
if (lazyLoadFailure) {
// failed when lazy loading this bean
throw new EntityNotFoundException("Lazy loading failed on type:" + owner.getClass().getName() + " id:" + ownerId + " - Bean has been deleted.");
}
// bean should be loaded and intercepting now. setLoaded() has
// been called by the lazy loading mechanism
}
}
/**
* Helper method to check if two objects are equal.
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
protected boolean areEqual(Object obj1, Object obj2) {
if (obj1 == null) {
return (obj2 == null);
}
if (obj2 == null) {
return false;
}
if (obj1 == obj2) {
return true;
}
if (obj1 instanceof BigDecimal) {
// Use comparable for BigDecimal as equals
// uses scale in comparison...
if (obj2 instanceof BigDecimal) {
Comparable com1 = (Comparable) obj1;
return (com1.compareTo(obj2) == 0);
} else {
return false;
}
}
if (obj1 instanceof URL) {
// use the string format to determine if dirty
return obj1.toString().equals(obj2.toString());
}
return obj1.equals(obj2);
}
/**
* Called when a BeanCollection is initialised automatically.
*/
public void initialisedMany(int propertyIndex) {
loadedProps[propertyIndex] = true;
}
/**
* Method that is called prior to a getter method on the actual entity.
*/
public void preGetter(int propertyIndex) {
if (state == STATE_NEW || disableLazyLoad) {
return;
}
if (!isLoadedProperty(propertyIndex)) {
loadBean(propertyIndex);
}
if (nodeUsageCollector != null) {
nodeUsageCollector.addUsed(getProperty(propertyIndex));
}
}
/**
* Called for "enhancement" postSetter processing. This is around a PUTFIELD
* so no need to check the newValue afterwards.
*/
public void postSetter(PropertyChangeEvent event) {
if (pcs != null && event != null) {
pcs.firePropertyChange(event);
}
}
/**
* Called for "subclassed" postSetter processing. Here the newValue has to be
* re-fetched (and passed into this method) in case there is code inside the
* setter that further mutates the value.
*/
public void postSetter(PropertyChangeEvent event, Object newValue) {
if (pcs != null && event != null) {
if (newValue != null && newValue.equals(event.getNewValue())) {
pcs.firePropertyChange(event);
} else {
pcs.firePropertyChange(event.getPropertyName(), event.getOldValue(), newValue);
}
}
}
/**
* OneToMany and ManyToMany don't have any interception so just check for
* PropertyChangeSupport.
*/
public PropertyChangeEvent preSetterMany(boolean interceptField, int propertyIndex, Object oldValue, Object newValue) {
if (readOnly) {
throw new IllegalStateException("This bean is readOnly");
}
setLoadedProperty(propertyIndex);
// Bean itself not considered dirty when many changed
if (pcs != null) {
return new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
} else {
return null;
}
}
private void setChangedPropertyValue(int propertyIndex, boolean setDirtyState, Object origValue) {
if (readOnly) {
throw new IllegalStateException("This bean is readOnly");
}
setChangedProperty(propertyIndex);
if (setDirtyState) {
setOriginalValue(propertyIndex, origValue);
if (!dirty) {
dirty = true;
if (embeddedOwner != null) {
// Cascade dirty state from Embedded bean to parent bean
embeddedOwner._ebean_getIntercept().setEmbeddedDirty(embeddedOwnerIndex);
}
if (nodeUsageCollector != null) {
nodeUsageCollector.setModified();
}
}
}
}
/**
* Check to see if the values are not equal. If they are not equal then create
* the old values for use with ConcurrencyMode.ALL.
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, Object oldValue, Object newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (!areEqual(oldValue, newValue)) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
/**
* Check for primitive boolean.
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, boolean oldValue, boolean newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (oldValue != newValue) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
/**
* Check for primitive int.
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, int oldValue, int newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (oldValue != newValue) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
/**
* long.
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, long oldValue, long newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (oldValue != newValue) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
/**
* double.
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, double oldValue, double newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (oldValue != newValue) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
/**
* float.
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, float oldValue, float newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (oldValue != newValue) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
/**
* short.
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, short oldValue, short newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (oldValue != newValue) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
/**
* char.
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, char oldValue, char newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (oldValue != newValue) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
/**
* byte.
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, byte oldValue, byte newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (oldValue != newValue) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
/**
* char[].
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, char[] oldValue, char[] newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (!areEqualChars(oldValue, newValue)) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null: new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
/**
* byte[].
*/
public PropertyChangeEvent preSetter(boolean intercept, int propertyIndex, byte[] oldValue, byte[] newValue) {
if (state == STATE_NEW) {
setLoadedProperty(propertyIndex);
} else if (!areEqualBytes(oldValue, newValue)) {
setChangedPropertyValue(propertyIndex, intercept, oldValue);
} else {
return null;
}
return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
}
private static boolean areEqualBytes(byte[] b1, byte[] b2) {
if (b1 == null) {
return (b2 == null);
} else if (b2 == null) {
return false;
} else if (b1 == b2) {
return true;
} else if (b1.length != b2.length) {
return false;
}
for (int i = 0; i < b1.length; i++) {
if (b1[i] != b2[i]) {
return false;
}
}
return true;
}
private static boolean areEqualChars(char[] b1, char[] b2) {
if (b1 == null) {
return (b2 == null);
} else if (b2 == null) {
return false;
} else if (b1 == b2) {
return true;
} else if (b1.length != b2.length) {
return false;
}
for (int i = 0; i < b1.length; i++) {
if (b1[i] != b2[i]) {
return false;
}
}
return true;
}
}