|
27 | 27 | */
|
28 | 28 | public class CursorResultSet<T> implements Iterable<T> {
|
29 | 29 |
|
30 |
| - private String database; |
31 |
| - private transient InternalCursorDriver cursorDriver; |
32 |
| - private transient Class<?>[] clazz; |
33 |
| - private transient CursorEntity<T> entity; |
34 |
| - private transient int pos; |
35 |
| - private int totalCount; |
36 |
| - private transient Iterator<T> itr; |
37 |
| - |
38 |
| - public CursorResultSet(String database, InternalCursorDriver cursorDriver, CursorEntity<T> entity, Class<?> ...clazz) { |
39 |
| - this.database = database; |
40 |
| - this.cursorDriver = cursorDriver; |
41 |
| - this.clazz = clazz; |
42 |
| - this.entity = entity; |
43 |
| - this.totalCount = entity == null ? 0 : entity.getCount(); |
44 |
| - this.pos = 0; |
45 |
| - this.itr = new CursorIterator(); |
46 |
| - } |
47 |
| - |
48 |
| - public Iterator<T> iterator() { |
49 |
| - return new CursorIterator(); |
50 |
| - } |
51 |
| - |
52 |
| - public boolean hasNext() { |
53 |
| - return itr.hasNext(); |
54 |
| - } |
55 |
| - |
56 |
| - public T next() { |
57 |
| - return itr.next(); |
58 |
| - } |
59 |
| - |
60 |
| - public void close() throws ArangoException { |
61 |
| - long cursorId = entity.getCursorId(); |
62 |
| - cursorDriver.finishQuery(database, cursorId); |
63 |
| - } |
64 |
| - |
65 |
| - public int getTotalCount() { |
66 |
| - return totalCount; |
67 |
| - } |
68 |
| - |
69 |
| - private void updateEntity() throws ArangoException { |
70 |
| - long cursorId = entity.getCursorId(); |
71 |
| - this.entity = cursorDriver.continueQuery(database, cursorId, this.clazz); |
72 |
| - this.pos = 0; |
73 |
| - } |
74 |
| - |
75 |
| - public class CursorIterator implements Iterator<T> { |
76 |
| - |
77 |
| - public boolean hasNext() { |
78 |
| - if (entity == null) { |
79 |
| - return false; |
80 |
| - } |
81 |
| - if (pos < entity.size()) { |
82 |
| - return true; |
83 |
| - } |
84 |
| - if (entity.hasMore()) { |
85 |
| - return true; |
86 |
| - } |
87 |
| - return false; |
88 |
| - } |
89 |
| - |
90 |
| - public T next() { |
91 |
| - if (hasNext()) { |
92 |
| - if (pos >= entity.size()) { |
93 |
| - try { |
94 |
| - updateEntity(); |
95 |
| - } catch (ArangoException e) { |
96 |
| - throw new IllegalStateException(e); |
97 |
| - } |
98 |
| - } |
99 |
| - return entity.get(pos++); |
100 |
| - } |
101 |
| - throw new NoSuchElementException(); |
102 |
| - } |
103 |
| - |
104 |
| - public void remove() { |
105 |
| - throw new UnsupportedOperationException("remove does not support!!"); |
106 |
| - } |
107 |
| - |
108 |
| - } |
109 |
| - |
| 30 | + private String database; |
| 31 | + private InternalCursorDriver cursorDriver; |
| 32 | + private Class<?>[] clazz; |
| 33 | + private CursorEntity<T> entity; |
| 34 | + private int pos; |
| 35 | + private int totalCount; |
| 36 | + private Iterator<T> itr; |
| 37 | + |
| 38 | + public CursorResultSet(String database, InternalCursorDriver cursorDriver, CursorEntity<T> entity, |
| 39 | + Class<?>... clazz) { |
| 40 | + this.database = database; |
| 41 | + this.cursorDriver = cursorDriver; |
| 42 | + this.clazz = clazz; |
| 43 | + this.entity = entity; |
| 44 | + this.totalCount = entity == null ? 0 : entity.getCount(); |
| 45 | + this.pos = 0; |
| 46 | + this.itr = new CursorIterator(); |
| 47 | + } |
| 48 | + |
| 49 | + @Override |
| 50 | + public Iterator<T> iterator() { |
| 51 | + return new CursorIterator(); |
| 52 | + } |
| 53 | + |
| 54 | + public boolean hasNext() { |
| 55 | + return itr.hasNext(); |
| 56 | + } |
| 57 | + |
| 58 | + public T next() { |
| 59 | + return itr.next(); |
| 60 | + } |
| 61 | + |
| 62 | + public void close() throws ArangoException { |
| 63 | + long cursorId = entity.getCursorId(); |
| 64 | + cursorDriver.finishQuery(database, cursorId); |
| 65 | + } |
| 66 | + |
| 67 | + public int getTotalCount() { |
| 68 | + return totalCount; |
| 69 | + } |
| 70 | + |
| 71 | + public void updateEntity() throws ArangoException { |
| 72 | + long cursorId = entity.getCursorId(); |
| 73 | + this.entity = cursorDriver.continueQuery(database, cursorId, this.clazz); |
| 74 | + this.pos = 0; |
| 75 | + } |
| 76 | + |
| 77 | + public class CursorIterator implements Iterator<T> { |
| 78 | + |
| 79 | + @Override |
| 80 | + public boolean hasNext() { |
| 81 | + if (entity == null) { |
| 82 | + return false; |
| 83 | + } |
| 84 | + if (pos < entity.size()) { |
| 85 | + return true; |
| 86 | + } |
| 87 | + if (entity.hasMore()) { |
| 88 | + return true; |
| 89 | + } |
| 90 | + return false; |
| 91 | + } |
| 92 | + |
| 93 | + @Override |
| 94 | + public T next() { |
| 95 | + if (hasNext()) { |
| 96 | + if (pos >= entity.size()) { |
| 97 | + try { |
| 98 | + updateEntity(); |
| 99 | + } catch (ArangoException e) { |
| 100 | + throw new IllegalStateException(e); |
| 101 | + } |
| 102 | + } |
| 103 | + return entity.get(pos++); |
| 104 | + } |
| 105 | + throw new NoSuchElementException(); |
| 106 | + } |
| 107 | + |
| 108 | + @Override |
| 109 | + public void remove() { |
| 110 | + throw new UnsupportedOperationException("remove does not support!!"); |
| 111 | + } |
| 112 | + |
| 113 | + } |
| 114 | + |
110 | 115 | }
|
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