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Oracle Fusion Middleware Java API Reference for Oracle Extension SDK Reference 11g Release 1 (11.1.1.9.0) E52944-01 |
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java.lang.Object
oracle.javatools.util.ModelUtil
public class ModelUtil
Common utility methods.
Constructor Summary | |
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protected |
ModelUtil() |
Method Summary | ||
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static boolean |
areDifferent(java.lang.Object o1, java.lang.Object o2) This is a utility method that compares two objects when one or both of the objects might be null . |
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static boolean |
areEqual(java.lang.Object o1, java.lang.Object o2) This is a utility method that compares two objects when one or both of the objects might be null The result of this method is determined as follows: If o1 and o2 are the same object according to the == operator, return true . |
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static
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as(java.lang.Object o, java.lang.Class<T> clazz) Casts the object to the given class, if it is an instance, or returns null otherwise. |
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static java.lang.String |
concat(java.lang.String[] strs) Returns a single string that is the concatenation of all the strings in the specified string array. |
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static java.lang.String |
concat(java.lang.String[] strs, java.lang.String delim) Returns a single string that is the concatenation of all the strings in the specified string array. |
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static void |
deepCopy(java.util.List src, java.util.List dst) Copies list contents from src to dst . |
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static void |
deepCopy(java.util.List src, java.util.List dst, boolean eliminateDuplicates) Copies list contents from src to dst . |
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static void |
deepCopy(java.util.Map src, java.util.Map dst) Copies key-value mappings from src to dst . |
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static int |
hashCodeFor(java.lang.Object o) Returns the hash code for the specified object, or 0 if it is null. |
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static boolean |
hasLength(java.lang.CharSequence cs) Returns true if the specified String is not null and has a length greater than zero. |
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static boolean |
hasLength(java.lang.String s) |
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static boolean |
hasNonNullElement(java.lang.Object[] array) Returns true if the specified array is not null and contains a non-null element. |
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static java.lang.String |
nullifyIfEmpty(java.lang.String s) Returns null if the specified string is empty or null . |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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protected ModelUtil()
Method Detail |
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public static final boolean areEqual(java.lang.Object o1, java.lang.Object o2)
null
The result of this method is determined as follows:
o1
and o2
are the same object according to the ==
operator, return true
.o1
or o2
is null
, return false
.o1.equals(o2)
.areDifferent(Object, Object)
method.
For array types, one of the equals
methods in Arrays
should be used instead of this method. Note that arrays with more than one dimension will require some custom code in order to implement equals
properly.
public static final boolean areDifferent(java.lang.Object o1, java.lang.Object o2)
null
. The result returned by this method is determined as follows:
o1
and o2
are the same object according to the ==
operator, return false
.o1
or o2
is null
, return true
.!o1.equals(o2)
.areEqual(Object, Object)
method.
For array types, one of the equals
methods in Arrays
should be used instead of this method. Note that arrays with more than one dimension will require some custom code in order to implement equals
properly.
public static final boolean hasNonNullElement(java.lang.Object[] array)
true
if the specified array is not null and contains a non-null element. Returns false
if the array is null or if all the array elements are null.public static final java.lang.String concat(java.lang.String[] strs)
public static final java.lang.String concat(java.lang.String[] strs, java.lang.String delim)
public static final boolean hasLength(java.lang.String s)
hasLength(CharSequence)
public static int hashCodeFor(java.lang.Object o)
o
- an object, which may be null.public static final boolean hasLength(java.lang.CharSequence cs)
true
if the specified String
is not null
and has a length greater than zero. This is a very frequently occurring check.public static final java.lang.String nullifyIfEmpty(java.lang.String s)
null
if the specified string is empty or null
. Otherwise the string itself is returned.public static final void deepCopy(java.util.Map src, java.util.Map dst)
src
to dst
. Any pre-existing mappings in dst
are not deleted. However, any mappings in src
that also exist in dst
will result in the dst
mappings being overwritten, if and only if the value objects have exactly the same type; otherwise, a new value object is created and the old value object is discarded. The key objects are not copied, so the keys that end up in dst
will be references to the exact same objects as the keys in src
. Values, however, are copied if the value objects implement Copyable
. Value objects that do not implement Copyable
are put directly into the dst
Map
.public static final void deepCopy(java.util.List src, java.util.List dst, boolean eliminateDuplicates)
src
to dst
. If the dst
list is not empty it will add the elements from src
. If eliminateDuplicates
is true, src
elements that already exist in dst
are not copied.public static final void deepCopy(java.util.List src, java.util.List dst)
src
to dst
. If the dst
list is not empty it will add the elements from src
. If a src
element already exists in dst
, it isn't copied.public static <T> T as(java.lang.Object o, java.lang.Class<T> clazz)
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Oracle Fusion Middleware Java API Reference for Oracle Extension SDK Reference 11g Release 1 (11.1.1.9.0) E52944-01 |
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