小编Wer*_*her的帖子

我正在尝试将hibernate空间与JPA集成以进行地理搜索.我一直在官方网站上引用该教程(我与hibernatespatial无关).

遗憾的是,本教程未介绍如何从纬度/经度对创建Point实例.我试图在这里这样做,但我仍然不确定这是否是将纬度/经度对转换为JTS Point实例的正确方法:

import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.geom.Point;
import org.geotools.geometry.jts.JTSFactoryFinder;
import org.hibernate.annotations.Type;
import javax.persistence.*;

@Entity
public class Location {

    private Double latitude;

    private Double longitude;

    @Type(type = "org.hibernatespatial.GeometryUserType")
    private Point coordinates;

    private final GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory(null);

    @PrePersist
    @PreUpdate
    public void updateCoordinate() {
        if (this.latitude == null || this.longitude == null) {
            this.coordinates = null;
        } else {
            this.coordinates = geometryFactory.createPoint(new Coordinate(latitude, longitude));
        }
    }

    public Double getLatitude() {
        return latitude;
    }

    public void setLatitude(Double latitude) { …

我正在努力创建一个包含多个子规格的cocoapod规范,其中每个子规范应该是它自己的框架.基本上我有以下规格:

Pod::Spec.new do |s|
  s.name     = 'BMCommons'
  ...
  s.default_subspec = 'BMCore'

  s.subspec 'BMCore' do |s_core|
    s_core.header_dir = 'BMCore'
    ...
  end

  s.subspec 'BMUICore' do |s_uicore|
    s_uicore.header_dir = 'BMUICore'
    ...
  end
end

现在我希望这导致BMCore.framework和BMUICore.framework而不是一个BMCommons.framework.这是可能的还是我需要创建多个规格来实现这一目标？

我在NSData类上实现了一个类别方法,它使用SHA-1哈希返回数据的签名,并使用私钥进行后续加密,如下所示:

- (NSData *)signatureWithKey:(SecKeyRef)keyRef {

    if (keyRef == NULL) {
        return nil;
    }

    NSData *sha1Digest = [self dataWithSHA1Digest];

    size_t maxLength = SecKeyGetBlockSize(keyRef) - 11;

    if ([sha1Digest length] > maxLength) {
        NSString *reason = [NSString stringWithFormat:@"Digest is too long to sign with this key, max length is %ld and actual length is %ld", maxLength, (unsigned long)[self length]];
        NSException *ex = [NSException exceptionWithName:@"BMInvalidArgumentException" reason:reason userInfo:nil];
        @throw ex;
    }

#if TARGET_OS_IPHONE
    OSStatus status = noErr;

    uint8_t *plainBuffer = (uint8_t *)[sha1Digest bytes];
    size_t plainBufferSize …