我有这段代码
var x = xId.HasValue ? _xRepository.Get(xId) : null;
var result = _yRepository.Find()
.Where(y=> x == null || x.Ys.Contains(y)).ToArray();
NHibernate在这一行.Where(y=> x == null || x.Ys.Contains(y))中断，执行所有条件，如果x的值等于null，它就不会在第一个条件上停止。
任何人都可以帮我解决这个问题。
答案 0 :(得分：1)
在这种情况下，我们可以在创建SQL之前评估using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Assertions;
public class InteractObject : MonoBehaviour
{
public Material radiusMaterial;
public Camera cam; //cam the raycast comes from
public bool clicked; //if an object is clicked
private PlayerInventory inventory; //Get the players inventory.
private bool planting; //To prevent currentObject from changing while planting.
//For interactable zone and editor
[Range(0, 50)]
public float viewRadius; //The radius of the circle that determines the interactable zone
[Range(0, 360)]
public float viewAngle; //The angle between the lines, determining the interactable zone
public LayerMask interactable; //The layerMask we want the code to care about
public List<Collider> interactableObjects = new List<Collider>(); //A list of all interactable objects in range
public GameObject closestObject; //Holds the interactable object closest to the character, if any are in range
[SerializeField]
private GameObject currentObject; //The object the mouse hovers over.
public GameObject mainManager; //Need to access the main manager
private Animator animController;
private HighlightObject tempHighlight;
private HighlightObject.Type oldStatus;
/// <summary>
/// Get all the components needed from scratch
/// </summary>
void Awake()
{
cam = Camera.main;
mainManager = GameObject.FindGameObjectWithTag("Manager");
inventory = GetComponent<PlayerInventory>();
animController = GetComponent<Animator>();
//FIX HERE, TILEPLANT BASED
}
void Update()
{
if (!planting) //Won't change currentObject if the player is planting. Prevents the radius from changing its object.
FindInteractableObjects();
if (Input.GetKeyDown(KeyCode.E) || Input.GetMouseButtonDown(0))
{
UseTool(); //Uses current held tool
}
if (currentObject != null)
{
radiusMaterial.SetVector("_Center", currentObject.transform.position); //The coordinates of the radius center on the ground for the shader.
SetRadius(); //Sets the radius according to plant and plant type.
}
else
HideRadius(); //Sets the radius width to 0 so its invisible.
}
/// <summary>
/// Finds all interactable objects within the interactable area of the player. This area is restricted by the
/// viewRadius and viewAngle variables, and is visible in the unity editor.
/// It then saves these interactable objects in a list that can be accessed throughout the script.
/// </summary>
void FindInteractableObjects()
{
interactableObjects.Clear(); //Clears the list
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition); //Shoots a ray to the center of the screen from the camera.
RaycastHit[] hits = Physics.RaycastAll(ray, 15); //Saves all the objects the ray hits in a list
Debug.DrawRay(ray.origin, ray.direction * 30f, Color.blue); //Shows a ray in the editor window
foreach (RaycastHit hit in hits) //checks if the hit is a plant
{
if (hit.collider.CompareTag("Plant"))
{
currentObject = hit.collider.gameObject; //Sets current object to a hit.
SetRadius(); //Sets the radius of the effects of the plant
break;
}
}
#region Highlight object
if ((tempHighlight != null) && (tempHighlight.gameObject != currentObject)) //Sets the highlight of the object on change.
{
tempHighlight.SetMaterial(oldStatus); //Sets the old current objects status to what it was.
tempHighlight = currentObject.GetComponent<HighlightObject>(); //Sets th to the newly selected object.
oldStatus = tempHighlight.getStatus(); //Gets the status to change back to when changing the plant.
if (oldStatus == HighlightObject.Type.Highlight) //This is not allowed.
oldStatus = HighlightObject.Type.Normal;
tempHighlight.SetMaterial(HighlightObject.Type.Highlight); //Highlights the newly currentObject.
}
else if (tempHighlight == null && currentObject != null) //Highlights the objects.
{
tempHighlight = currentObject.GetComponent<HighlightObject>(); //sets the currentObject.
oldStatus = tempHighlight.getStatus(); //Saves the old status to change back to
tempHighlight.SetMaterial(HighlightObject.Type.Highlight); //Highlights the currentObject.
}
#endregion
//closestObject = null;
Collider[] interactableObjectsInRange = Physics.OverlapSphere(transform.position, viewRadius, interactable); //KAYERS EXPLAIN
foreach (Collider value in interactableObjectsInRange)
{
Vector3 dirToTarget = value.transform.position - transform.position;
if (Vector3.Angle(transform.forward, dirToTarget) < viewAngle / 2)
interactableObjects.Add(value);
if (value.CompareTag("Seed")) //Picks up a seed
{
Seed.Type _seedtype = value.GetComponent<Seed>().seedType;
inventory.AddToInventory(_seedtype, 1); //Adds the relevant seed to the inventory
Destroy(value.gameObject);
}
else if (value.CompareTag("Collectable")) //Picks up a collectable like Fruit
{
Sellables item = value.GetComponent<Sellables>();
inventory.AddToInventory(item, 1); //Adds collectable to the inventory.
Destroy(value.gameObject);
}
}
}
private void UseTool()
{
switch (inventory.currentTool)
{
case PlayerInventory.Tool.Free:
planting = true;
GetComponent<ObjectPlacement>().SetObject(inventory.GetSelectedSeed()); //Plants a plant with current selected seed
//GetComponent<ObjectPlacement>().MouseClicked(); //Delay on the mouseclick to prevent accidently fast plantig.
break;
case PlayerInventory.Tool.Shovel:
planting = false;
HideRadius(); //Hides the material radius.
if (currentObject != null && currentObject.CompareTag("Plant"))
{
BasePlant SelecetedPlant = currentObject.GetComponent<BasePlant>(); //Makes code prettier
if (SelecetedPlant.fullgrown)
SelecetedPlant.HarvestPlant(1); //Plant drop two seeds since it is fullgrown.
else
{
SelecetedPlant.killPlant(1); //Plants disseappear
inventory.AddToInventory(SelecetedPlant.GetPlantType(), 1); //Drops one seed
}
animController.SetTrigger("Harvesting");
tempHighlight = null; //Removes gameobject to prevent bugs
currentObject = null; // Ditto
}
break;
case PlayerInventory.Tool.Watercan:
{
animController.SetTrigger("Watering");
if (interactableObjects != null)
{
foreach (Collider col in interactableObjects) //Go through the interactable list and and waters the plants.
{
if (col.CompareTag("Plant"))
{
col.gameObject.GetComponent<BasePlant>().WaterPlant(); //Waters the Plant.
}
}
}
HideRadius();
break;
}
default:
break;
}
}
//Adds a seed that is picked up to the inventory.
private void PickUpSeed(Seed.Type sendIn)
{
inventory.AddToInventory(sendIn, 1);
}
/// <summary>
/// Sets the radius for the plants area of effect
/// </summary>
private void SetRadius()
{
Seed.Type sType = currentObject.GetComponent<Seed>().GetSeedType(); //To get the right plant
float _radius = 0; //If the plant does not have a radius it won't be seen.
Color color = Color.blue; //Waterplants natural color since local variables need to be set to something.
bool radiusPlant = true; //True if the selected plant have a radius.
switch (sType) //Sets the type of the radius
{
case Seed.Type.Shield:
radiusMaterial.SetFloat("_RadiusWidth", 0.2f);
_radius = currentObject.GetComponent<ShieldPlant>().radius; //Gets the plants radius.
color = Color.magenta;
break;
case Seed.Type.Water:
radiusMaterial.SetFloat("_RadiusWidth", 0.2f);
_radius = currentObject.GetComponent<WaterPlant>().radius;
break;
case Seed.Type.Light:
radiusMaterial.SetFloat("_RadiusWidth", 0.2f);
_radius = currentObject.GetComponent<LightPlant>().radius;
color = Color.yellow;
break;
default:
radiusMaterial.SetFloat("_RadiusWidth", 0);
radiusPlant = false;
break;
}
if(radiusPlant)
{
radiusMaterial.SetColor("_RadiusColor", color);
radiusMaterial.SetFloat("_Radius", _radius);
}
}
//Hides the circle
private void HideRadius()
{
radiusMaterial.SetFloat("_RadiusWidth", 0);
}
//Sets the planting mode from a differente script : ObjectPlacement
public void SetPlanting(bool set)
{
planting = set;
}
//Sets current object from another script : ObjectPlacement
public void SetCurrentObject(GameObject setObject)
{
currentObject = setObject;
}
}
，例如：
延期
有这样的扩展名
x我们可以在一行进行此类过滤
var toFilter = _yRepository.Find();
// should we handle x at all?
if (x != null)
{
toFilter = toFilter.Where(y => x.ys.Contains(y));
}
var emailAddresses = toFilter.ToArray();