我正在创建一个可以在本地保存数据的Android应用程序。我用orm-lite来保存数据
这是我的模型类结构
public class Site implements Serializable {
private static final long serialVersionUID = 1L;
@DatabaseField(generatedId = true)
int id;
@DatabaseField
int siteRecordId;
@DatabaseField
int recorderId;
@DatabaseField
String siteName;
@DatabaseField
String siteDatum;
@DatabaseField
String siteEasting;
@DatabaseField
String siteLatitude;
@DatabaseField
String siteLongtitude;
@DatabaseField
String siteNorthing;
@DatabaseField
String siteLocationMethod;
@DatabaseField
String siteZone;
@DatabaseField
String siteType;
@DatabaseField
String horizantalAccuracy;
@DatabaseField
String landFormPattern;
@DatabaseField
String landFormElement;
@DatabaseField
String vagetation;
@DatabaseField
String landUse;
@DatabaseField
String distanceToWater;
@DatabaseField
String howToSite;
@DatabaseField
String primaryReport;
@ForeignCollectionField(eager = true)
ForeignCollection<Parameter> parameters;
public Site(){
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getSiteRecordId() {
return siteRecordId;
}
public void setSiteRecordId(int siteRecordId) {
this.siteRecordId = siteRecordId;
}
public int getRecorderId() {
return recorderId;
}
public void setRecorderId(int recorderId) {
this.recorderId = recorderId;
}
public String getSiteName() {
return siteName;
}
public void setSiteName(String siteName) {
this.siteName = siteName;
}
public String getSiteDatum() {
return siteDatum;
}
public void setSiteDatum(String siteDatum) {
this.siteDatum = siteDatum;
}
public String getSiteEasting() {
return siteEasting;
}
public void setSiteEasting(String siteEasting) {
this.siteEasting = siteEasting;
}
public String getSiteLatitude() {
return siteLatitude;
}
public void setSiteLatitude(String siteLatitude) {
this.siteLatitude = siteLatitude;
}
public String getSiteLongtitude() {
return siteLongtitude;
}
public void setSiteLongtitude(String siteLongtitude) {
this.siteLongtitude = siteLongtitude;
}
public String getSiteNorthing() {
return siteNorthing;
}
public void setSiteNorthing(String siteNorthing) {
this.siteNorthing = siteNorthing;
}
public String getSiteLocationMethod() {
return siteLocationMethod;
}
public void setSiteLocationMethod(String siteLocationMethod) {
this.siteLocationMethod = siteLocationMethod;
}
public String getSiteZone() {
return siteZone;
}
public void setSiteZone(String siteZone) {
this.siteZone = siteZone;
}
public String getSiteType() {
return siteType;
}
public void setSiteType(String siteType) {
this.siteType = siteType;
}
public String getHorizantalAccuracy() {
return horizantalAccuracy;
}
public void setHorizantalAccuracy(String horizantalAccuracy) {
this.horizantalAccuracy = horizantalAccuracy;
}
public String getLandFormPattern() {
return landFormPattern;
}
public void setLandFormPattern(String landFormPattern) {
this.landFormPattern = landFormPattern;
}
public String getLandFormElement() {
return landFormElement;
}
public void setLandFormElement(String landFormElement) {
this.landFormElement = landFormElement;
}
public String getVagetation() {
return vagetation;
}
public void setVagetation(String vagetation) {
this.vagetation = vagetation;
}
public String getLandUse() {
return landUse;
}
public void setLandUse(String landUse) {
this.landUse = landUse;
}
public String getDistanceToWater() {
return distanceToWater;
}
public void setDistanceToWater(String distanceToWater) {
this.distanceToWater = distanceToWater;
}
public String getHowToSite() {
return howToSite;
}
public void setHowToSite(String howToSite) {
this.howToSite = howToSite;
}
public String getPrimaryReport() {
return primaryReport;
}
public void setPrimaryReport(String primaryReport) {
this.primaryReport = primaryReport;
}
public ForeignCollection<Parameter> getParameters() {
return parameters;
}
public void setParameters(ForeignCollection<Parameter> parameters) {
this.parameters = parameters;
}
}
package com.jbmdigital.model;
import java.io.Serializable;
import com.j256.ormlite.field.DatabaseField;
public class Parameter实现Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
@DatabaseField(generatedId = true)
int id;
@DatabaseField
int categoryId;
@DatabaseField
int siteId;
@DatabaseField
String paramValue;
@DatabaseField
int clonable;
@DatabaseField(foreign = true, foreignAutoRefresh = true, columnName = "site")
Site site;
public Parameter(){
}
public Parameter(int categoryId,String paramValue,int clonable,Site site){
this.categoryId = categoryId;
this.paramValue = paramValue;
this.clonable = clonable;
this.site = site;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getCategoryId() {
return categoryId;
}
public void setCategoryId(int categoryId) {
this.categoryId = categoryId;
}
public String getParamValue() {
return paramValue;
}
public void setParamValue(String paramValue) {
this.paramValue = paramValue;
}
public int getClonable() {
return clonable;
}
public void setClonable(int clonable) {
this.clonable = clonable;
}
public Site getSite() {
return site;
}
public void setSite(Site site) {
this.site = site;
}
}
这是我的ormlite_config.txt
＃
＃
数据类= com.jbmdigital.model.Site 表名=站点
的fieldName = ID generatedId =真
的fieldName = siteRecordId
的fieldName = recorderId
的fieldName = SITENAME INDEXNAME =
的fieldName = siteDatum
的fieldName = siteEasting
的fieldName = siteLatitude
的fieldName = siteLongtitude
的fieldName = siteNorthing
的fieldName = siteLocationMethod
的fieldName = siteZone
的fieldName = siteType
的fieldName = horizantalAccuracy
的fieldName = landFormPattern
的fieldName = landFormElement
的fieldName = vagetation
的fieldName =土地利用
的fieldName = distanceToWater
的fieldName = howToSite
的fieldName = primaryReport
数据类= com.jbmdigital.model.Parameter 表名=参数
的fieldName = ID generatedId =真
的fieldName =网站ID
的fieldName =的categoryId
的fieldName = paramValue
的fieldName =站点 外国=真
的fieldName =可克隆
这是我的Activity类
------------------------------------------------------------------------
DatabaseHelper db = new DatabaseHelper(this);
RuntimeExceptionDao<Site, Integer> simpleSiteDao = db.getSimpleSiteDataDao();
RuntimeExceptionDao<Parameter, Integer> simpleParamDao = db.getSimpleaParameterDataDao();
simpleSiteDao.create(site);
Site accountResult = simpleSiteDao.queryForId(site.getId());
for (Parameter parameter : parameterList) {
parameter.setSite(accountResult);
simpleParamDao.create(parameter);
}
List<Site> sites= simpleSiteDao.queryForAll();
int index = sites.size()-1;
Log.d("count",""+sites.get(index).getParameters().size());
但如果我试图打印日志，它会给我零点异常。我想我不会根据Site实例获取ParameterList。