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7 | 7 | import com.marklogic.client.Page; |
8 | 8 |
|
9 | 9 | public class BasicPage<T> implements Page<T> { |
10 | | - private Iterator<T> iterator; |
11 | | - private long start; |
12 | | - private Long size = null; |
13 | | - private long pageSize; |
14 | | - private long totalSize; |
15 | | - |
16 | | - protected BasicPage(Class<T> type) { |
17 | | - } |
18 | | - |
19 | | - public BasicPage(Iterator<T> iterator, long start, long pageSize, long totalSize) { |
20 | | - this.iterator = iterator; |
21 | | - this.start = start; |
22 | | - this.pageSize = pageSize; |
23 | | - this.totalSize = totalSize; |
24 | | - } |
25 | | - |
26 | | - @Override |
27 | | - public Iterator<T> iterator() { |
28 | | - return iterator; |
29 | | - } |
30 | | - |
31 | | - @Override |
32 | | - public boolean hasNext() { |
33 | | - return iterator.hasNext(); |
34 | | - } |
35 | | - |
36 | | - @Override |
37 | | - public T next() { |
38 | | - return iterator.next(); |
39 | | - } |
40 | | - |
41 | | - @Override |
42 | | - public long getStart() { |
43 | | - return start; |
44 | | - } |
45 | | - |
46 | | - public BasicPage<T> setStart(long start) { |
47 | | - this.start = start; |
48 | | - return this; |
49 | | - } |
50 | | - |
51 | | - @Override |
52 | | - public long getPageSize() { |
53 | | - return pageSize; |
54 | | - } |
55 | | - |
56 | | - public BasicPage<T> setPageSize(long pageSize) { |
57 | | - this.pageSize = pageSize; |
58 | | - return this; |
59 | | - } |
60 | | - |
61 | | - @Override |
62 | | - public long getTotalSize() { |
63 | | - return totalSize; |
64 | | - } |
65 | | - |
66 | | - public BasicPage<T> setTotalSize(long totalSize) { |
67 | | - this.totalSize = totalSize; |
68 | | - return this; |
69 | | - } |
70 | | - |
71 | | - public BasicPage<T> setSize(long size) { |
72 | | - this.size = new Long(size); |
73 | | - return this; |
74 | | - } |
75 | | - |
76 | | - @Override |
77 | | - public long size() { |
78 | | - if ( size != null ) return size.longValue(); |
79 | | - if ( getPageSize() == 0 ) { |
80 | | - return 0; |
81 | | - } else if ( hasNextPage() ) { |
82 | | - return getPageSize(); |
83 | | - } else if ((getTotalSize() % getPageSize()) == 0) { |
84 | | - return getPageSize(); |
85 | | - } else { |
86 | | - return getTotalSize() % getPageSize(); |
87 | | - } |
88 | | - } |
89 | | - |
90 | | - @Override |
91 | | - public long getTotalPages() { |
92 | | - return ceilingDivision(getTotalSize(), getPageSize()); |
93 | | - } |
94 | | - |
95 | | - @Override |
96 | | - public boolean hasContent() { |
97 | | - return size() > 0; |
98 | | - } |
99 | | - |
100 | | - @Override |
101 | | - public boolean hasNextPage() { |
102 | | - return getPageNumber() < getTotalPages(); |
103 | | - } |
104 | | - |
105 | | - @Override |
106 | | - public boolean hasPreviousPage() { |
107 | | - return getPageNumber() > 1; |
108 | | - } |
109 | | - |
110 | | - @Override |
111 | | - public long getPageNumber() { |
112 | | - return ceilingDivision(getStart(), getPageSize()); |
113 | | - } |
114 | | - |
115 | | - private long ceilingDivision(long dividend, long divisor) { |
116 | | - if (divisor == 0) return 0; |
117 | | - long quotient = dividend / divisor; |
118 | | - return (dividend % divisor == 0) ? quotient : quotient + 1; |
119 | | - } |
120 | | - |
121 | | - @Override |
122 | | - public boolean isFirstPage() { |
123 | | - if ( getPageSize() == 0 ) return true; |
124 | | - return getPageNumber() == 1; |
125 | | - } |
126 | | - |
127 | | - @Override |
128 | | - public boolean isLastPage() { |
129 | | - if ( getPageSize() == 0 ) return true; |
130 | | - return getPageNumber() == getTotalPages(); |
131 | | - } |
| 10 | + private Iterator<T> iterator; |
| 11 | + private long start; |
| 12 | + private Long size = null; |
| 13 | + private long pageSize; |
| 14 | + private long totalSize; |
| 15 | + |
| 16 | + protected BasicPage(Class<T> type) { |
| 17 | + } |
| 18 | + |
| 19 | + public BasicPage(Iterator<T> iterator, long start, long pageSize, long totalSize) { |
| 20 | + this.iterator = iterator; |
| 21 | + this.start = start; |
| 22 | + this.pageSize = pageSize; |
| 23 | + this.totalSize = totalSize; |
| 24 | + } |
| 25 | + |
| 26 | + @Override |
| 27 | + public Iterator<T> iterator() { |
| 28 | + return iterator; |
| 29 | + } |
| 30 | + |
| 31 | + @Override |
| 32 | + public boolean hasNext() { |
| 33 | + return iterator.hasNext(); |
| 34 | + } |
| 35 | + |
| 36 | + @Override |
| 37 | + public T next() { |
| 38 | + return iterator.next(); |
| 39 | + } |
| 40 | + |
| 41 | + @Override |
| 42 | + public long getStart() { |
| 43 | + return start; |
| 44 | + } |
| 45 | + |
| 46 | + public BasicPage<T> setStart(long start) { |
| 47 | + this.start = start; |
| 48 | + return this; |
| 49 | + } |
| 50 | + |
| 51 | + @Override |
| 52 | + public long getPageSize() { |
| 53 | + return pageSize; |
| 54 | + } |
| 55 | + |
| 56 | + public BasicPage<T> setPageSize(long pageSize) { |
| 57 | + this.pageSize = pageSize; |
| 58 | + return this; |
| 59 | + } |
| 60 | + |
| 61 | + @Override |
| 62 | + public long getTotalSize() { |
| 63 | + return totalSize; |
| 64 | + } |
| 65 | + |
| 66 | + public BasicPage<T> setTotalSize(long totalSize) { |
| 67 | + this.totalSize = totalSize; |
| 68 | + return this; |
| 69 | + } |
| 70 | + |
| 71 | + public BasicPage<T> setSize(long size) { |
| 72 | + this.size = Long.valueOf(size); |
| 73 | + return this; |
| 74 | + } |
| 75 | + |
| 76 | + @Override |
| 77 | + public long size() { |
| 78 | + if ( size != null ) return size.longValue(); |
| 79 | + if ( getPageSize() == 0 ) { |
| 80 | + return 0; |
| 81 | + } else if ( hasNextPage() ) { |
| 82 | + return getPageSize(); |
| 83 | + } else if ((getTotalSize() % getPageSize()) == 0) { |
| 84 | + return getPageSize(); |
| 85 | + } else { |
| 86 | + return getTotalSize() % getPageSize(); |
| 87 | + } |
| 88 | + } |
| 89 | + |
| 90 | + @Override |
| 91 | + public long getTotalPages() { |
| 92 | + return ceilingDivision(getTotalSize(), getPageSize()); |
| 93 | + } |
| 94 | + |
| 95 | + @Override |
| 96 | + public boolean hasContent() { |
| 97 | + return size() > 0; |
| 98 | + } |
| 99 | + |
| 100 | + @Override |
| 101 | + public boolean hasNextPage() { |
| 102 | + return getPageNumber() < getTotalPages(); |
| 103 | + } |
| 104 | + |
| 105 | + @Override |
| 106 | + public boolean hasPreviousPage() { |
| 107 | + return getPageNumber() > 1; |
| 108 | + } |
| 109 | + |
| 110 | + @Override |
| 111 | + public long getPageNumber() { |
| 112 | + return ceilingDivision(getStart(), getPageSize()); |
| 113 | + } |
| 114 | + |
| 115 | + private long ceilingDivision(long dividend, long divisor) { |
| 116 | + if (divisor == 0) return 0; |
| 117 | + long quotient = dividend / divisor; |
| 118 | + return (dividend % divisor == 0) ? quotient : quotient + 1; |
| 119 | + } |
| 120 | + |
| 121 | + @Override |
| 122 | + public boolean isFirstPage() { |
| 123 | + if ( getPageSize() == 0 ) return true; |
| 124 | + return getPageNumber() == 1; |
| 125 | + } |
| 126 | + |
| 127 | + @Override |
| 128 | + public boolean isLastPage() { |
| 129 | + if ( getPageSize() == 0 ) return true; |
| 130 | + return getPageNumber() == getTotalPages(); |
| 131 | + } |
132 | 132 | } |
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