fix #189--handle case where pageSize=0

Author: sammefford

src/main/java/com/marklogic/client/impl/BasicPage.java

@@ -81,7 +81,9 @@ public BasicPage<T> setSize(long size) {
 
     public long size() {
         if ( size != null ) return size.longValue();
-        if ( hasNextPage() ) {
+        if ( getPageSize() == 0 ) {
+            return 0;
+        } else if ( hasNextPage() ) {
             return getPageSize();
         } else if ((getTotalSize() % getPageSize()) == 0) {
             return getPageSize();
@@ -91,6 +93,7 @@ public long size() {
     }
 
     public long getTotalPages() {
+        if ( getPageSize() == 0 ) return 0;
         return (long) Math.ceil((double) getTotalSize() / (double) getPageSize());
     }
 
@@ -107,17 +110,20 @@ public boolean hasPreviousPage() {
     }
 
     public long getPageNumber() {
+        if ( getPageSize() == 0 ) return 0;
         double _start = (double) start;
         double _pageSize = (double) getPageSize();
         if ( _start % _pageSize == 0 ) return new Double(_start / _pageSize).longValue();
         else return (long) Math.floor(_start / _pageSize) + 1;
     }
 
     public boolean isFirstPage() {
+        if ( getPageSize() == 0 ) return true;
         return getPageNumber() == 1;
     }
 
     public boolean isLastPage() {
+        if ( getPageSize() == 0 ) return true;
         return getPageNumber() == getTotalPages();
     }
 }

src/test/java/com/marklogic/client/test/PageTest.java

@@ -54,7 +54,17 @@ public void testTestPage() {
         assertEquals("Unexpected pageNumber", 1, page.getPageNumber());
         assertEquals("Unexpected isFirstPage", true, page.isFirstPage());
         assertEquals("Unexpected isLastPage", false, page.isLastPage());
-        
+
+        page = new TestPage(iterator, 10, 0, 101);
+        assertEquals("Unexpected size", 0, page.size());
+        assertEquals("Unexpected totalSize", 101, page.getTotalSize());
+        assertEquals("Unexpected totalPages", 0, page.getTotalPages());
+        assertEquals("Unexpected hasContent", false, page.hasContent());
+        assertEquals("Unexpected hasNextPage", false, page.hasNextPage());
+        assertEquals("Unexpected pageNumber", 0, page.getPageNumber());
+        assertEquals("Unexpected isFirstPage", true, page.isFirstPage());
+        assertEquals("Unexpected isLastPage", true, page.isLastPage());
+
         page = new TestPage(iterator, 2, 10, 100);
         assertEquals("Unexpected size", 10, page.size());
         assertEquals("Unexpected totalPages", 10, page.getTotalPages());