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因此,可以說有一個節點,它有三個屬性:pdf:Title
,dc:title
& node name
,我想比較和排序基於這些數組優先順序相同的屬性。因此,如果節點1具有全部三個屬性並且節點2僅具有dc:title
,則它應該比較節點1的pdf:Title
與節點2的dc:title
。比較(排序)的優先級來比較3個屬性的對象數組列表
這是我使用的代碼:
@Override
public int compare(Node o1, Node o2) {
try {
int compareValue;
boolean o1HasPdfTitle = o1.hasProperty("jcr:content/metadata/pdf:Title");
boolean o1HasDcTitle = o1.hasProperty("jcr:content/metadata/dc:title");
boolean o2HasPdfTitle = o2.hasProperty("jcr:content/metadata/pdf:Title");
boolean o2HasDcTitle = o2.hasProperty("jcr:content/metadata/dc:title");
if (o1HasPdfTitle && o2HasPdfTitle) {
compareValue = o1.getProperty("jcr:content/metadata/pdf:Title").getString().compareTo(o2.getProperty("jcr:content/metadata/pdf:Title").getString());
return compareValue;
} else if (o1HasPdfTitle && o2HasDcTitle) {
compareValue = o1.getProperty("jcr:content/metadata/pdf:Title").getString().compareTo(o2.getProperty("jcr:content/metadata/dc:title").getString());
return compareValue;
} else if (o1HasDcTitle && o2HasPdfTitle) {
compareValue = o1.getProperty("jcr:content/metadata/dc:title").getString().compareTo(o2.getProperty("jcr:content/metadata/pdf:Title").getString());
return compareValue;
} else if (o1HasDcTitle && o2HasDcTitle) {
compareValue = o1.getProperty("jcr:content/metadata/dc:title").getString().compareTo(o2.getProperty("jcr:content/metadata/dc:title").getString());
return compareValue;
} else if (!o1HasPdfTitle && !o1HasDcTitle && o2HasPdfTitle){
compareValue = o1.getName().compareTo(o2.getProperty("jcr:content/metadata/pdf:Title").getString());
return compareValue;
} else if (!o1HasPdfTitle && !o1HasDcTitle && o2HasDcTitle){
compareValue = o1.getName().compareTo(o2.getProperty("jcr:content/metadata/dc:title").getString());
return compareValue;
} else if (o1HasPdfTitle && !o2HasPdfTitle && !o2HasDcTitle){
compareValue = o1.getProperty("jcr:content/metadata/pdf:Title").getString().compareTo(o2.getName());
return compareValue;
} else if (o1HasDcTitle && !o2HasPdfTitle && !o2HasDcTitle){
compareValue = o1.getProperty("jcr:content/metadata/dc:title").getString().compareTo(o2.getName());
return compareValue;
} else {
compareValue = o1.getName().compareTo(o2.getName());
return compareValue;
}
} catch (Exception e) {
LOGGER.debug("CustomComparatorTitle debug message" + e);
return 0;
}
問題:它不排序正確,他們不是按字母順序排列。我錯過了什麼嗎?
還有沒有更好的方式來賴代碼而不使用這麼多的條件?我試圖避免IllegalArgumentException: Comparison method violates its general contract!