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7 | 7 | import com.marklogic.client.Page;
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8 | 8 |
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9 | 9 | public class BasicPage<T> implements Page<T> {
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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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