public class LazyStringArrayList extends AbstractProtobufList<String> implements LazyStringList, RandomAccess
An implementation of LazyStringList that wraps an ArrayList. Each element is one of
String, ByteString, or byte[]. It caches the last one requested which is most likely the one
needed next. This minimizes memory usage while satisfying the most common use cases.
Note that this implementation is not synchronized. If multiple threads access
an ArrayList instance concurrently, and at least one of the threads modifies the list
structurally, it must be synchronized externally. (A structural modification is any
operation that adds or deletes one or more elements, or explicitly resizes the backing array;
merely setting the value of an element is not a structural modification.) This is typically
accomplished by synchronizing on some object that naturally encapsulates the list.
If the implementation is accessed via concurrent reads, this is thread safe. Conversions are
done in a thread safe manner. It's possible that the conversion may happen more than once if two
threads attempt to access the same element and the modifications were not visible to each other,
but this will not result in any corruption of the list or change in behavior other than
performance.
Inheritance
Object >
java.util.AbstractCollection >
AbstractList >
com.google.protobuf.AbstractProtobufList >
LazyStringArrayList
Inherited Members
com.google.protobuf.AbstractProtobufList.add(E)
com.google.protobuf.AbstractProtobufList.add(int,E)
com.google.protobuf.AbstractProtobufList.addAll(int,java.util.Collection<? extends E>)
com.google.protobuf.AbstractProtobufList.addAll(java.util.Collection<? extends E>)
com.google.protobuf.AbstractProtobufList.clear()
com.google.protobuf.AbstractProtobufList.ensureIsMutable()
com.google.protobuf.AbstractProtobufList.equals(java.lang.Object)
com.google.protobuf.AbstractProtobufList.hashCode()
com.google.protobuf.AbstractProtobufList.isModifiable()
com.google.protobuf.AbstractProtobufList.makeImmutable()
com.google.protobuf.AbstractProtobufList.remove(int)
com.google.protobuf.AbstractProtobufList.remove(java.lang.Object)
com.google.protobuf.AbstractProtobufList.removeAll(java.util.Collection<?>)
com.google.protobuf.AbstractProtobufList.retainAll(java.util.Collection<?>)
com.google.protobuf.AbstractProtobufList.set(int,E)
Static Fields
EMPTY
public static final LazyStringList EMPTY
Constructors
LazyStringArrayList()
public LazyStringArrayList()
LazyStringArrayList(LazyStringList from)
public LazyStringArrayList(LazyStringList from)
LazyStringArrayList(int initialCapacity)
public LazyStringArrayList(int initialCapacity)
| Parameter |
|---|
| Name | Description |
initialCapacity | int
|
LazyStringArrayList(List<String> from)
public LazyStringArrayList(List<String> from)
Methods
add(byte[] element)
public void add(byte[] element)
Appends the specified element to the end of this list (optional operation).
| Parameter |
|---|
| Name | Description |
element | byte[]
|
add(ByteString element)
public void add(ByteString element)
Appends the specified element to the end of this list (optional operation).
add(int index, String element)
public void add(int index, String element)
| Parameters |
|---|
| Name | Description |
index | int
|
element | String
|
Overrides
com.google.protobuf.AbstractProtobufList.add(int,E)
addAll(int index, Collection<? extends String> c)
public boolean addAll(int index, Collection<? extends String> c)
| Parameters |
|---|
| Name | Description |
index | int
|
c | Collection<? extends java.lang.String>
|
Overrides
com.google.protobuf.AbstractProtobufList.addAll(int,java.util.Collection<? extends E>)
addAll(Collection<? extends String> c)
public boolean addAll(Collection<? extends String> c)
| Parameter |
|---|
| Name | Description |
c | Collection<? extends java.lang.String>
|
Overrides
com.google.protobuf.AbstractProtobufList.addAll(java.util.Collection<? extends E>)
addAllByteArray(Collection<byte[]> c)
public boolean addAllByteArray(Collection<byte[]> c)
Appends all elements in the specified byte[] collection to the end of this list.
addAllByteString(Collection<? extends ByteString> values)
public boolean addAllByteString(Collection<? extends ByteString> values)
Appends all elements in the specified ByteString collection to the end of this list.
| Parameter |
|---|
| Name | Description |
values | Collection<? extends com.google.protobuf.ByteString>
|
asByteArrayList()
public List<byte[]> asByteArrayList()
Returns a mutable view of this list. Changes to the view will be made into the original list.
This method is used in mutable API only.
asByteStringList()
public List<ByteString> asByteStringList()
Returns a view of the data as a list of ByteStrings.
clear()
Overrides
com.google.protobuf.AbstractProtobufList.clear()
get(int index)
public String get(int index)
| Parameter |
|---|
| Name | Description |
index | int
|
Overrides
getByteArray(int index)
public byte[] getByteArray(int index)
Returns the element at the specified position in this list as byte[].
| Parameter |
|---|
| Name | Description |
index | int
|
| Returns |
|---|
| Type | Description |
byte[] | |
getByteString(int index)
public ByteString getByteString(int index)
Returns the element at the specified position in this list as a ByteString.
| Parameter |
|---|
| Name | Description |
index | int
|
getRaw(int index)
public Object getRaw(int index)
Returns the element at the specified position in this list as an Object that will either be a
String or a ByteString.
| Parameter |
|---|
| Name | Description |
index | int
|
getUnderlyingElements()
public List<?> getUnderlyingElements()
Returns an unmodifiable List of the underlying elements, each of which is either a
String or its equivalent UTF-8 encoded ByteString or byte[]. It is an error for the
caller to modify the returned List, and attempting to do so will result in an UnsupportedOperationException.
| Returns |
|---|
| Type | Description |
List<?> | |
getUnmodifiableView()
public LazyStringList getUnmodifiableView()
Returns an unmodifiable view of the list.
mergeFrom(LazyStringList other)
public void mergeFrom(LazyStringList other)
Merges all elements from another LazyStringList into this one. This method differs from #addAll(Collection) on that underlying byte arrays are copied instead of reference shared.
Immutable API doesn't need to use this method as byte[] is not used there at all.
mutableCopyWithCapacity(int capacity)
public LazyStringArrayList mutableCopyWithCapacity(int capacity)
| Parameter |
|---|
| Name | Description |
capacity | int
|
remove(int index)
public String remove(int index)
| Parameter |
|---|
| Name | Description |
index | int
|
Overrides
com.google.protobuf.AbstractProtobufList.remove(int)
set(int index, byte[] s)
public void set(int index, byte[] s)
Replaces the element at the specified position in this list with the specified element
(optional operation).
| Parameters |
|---|
| Name | Description |
index | int
|
s | byte[]
|
set(int index, ByteString s)
public void set(int index, ByteString s)
Replaces the element at the specified position in this list with the specified element
(optional operation).
set(int index, String s)
public String set(int index, String s)
Overrides
com.google.protobuf.AbstractProtobufList.set(int,E)
size()
| Returns |
|---|
| Type | Description |
int | |
Overrides
