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FLocal/Common/dataobjects/TexImage.cs

108 lines
3.0 KiB

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using FLocal.Core;
using FLocal.Core.DB;
using FLocal.Core.DB.conditions;
using FLocal.Common.actions;
using FLocal.TexCompiler;
namespace FLocal.Common.dataobjects {
public class TexImage : SqlObject<TexImage> {
public class TableSpec : ISqlObjectTableSpec {
public const string TABLE = "TexImages";
public const string FIELD_ID = "Id";
public const string FIELD_HASH = "MD5";
public const string FIELD_TEXT = "Text";
public const string FIELD_UPLOADID = "UploadId";
public static readonly TableSpec instance = new TableSpec();
public string name { get { return TABLE; } }
public string idName { get { return FIELD_ID; } }
public void refreshSqlObject(int id) { Refresh(id); }
}
protected override ISqlObjectTableSpec table { get { return TableSpec.instance; } }
private string _hash;
public string hash {
get {
this.LoadIfNotLoaded();
return this._hash;
}
}
private string _text;
public string text {
get {
this.LoadIfNotLoaded();
return this._text;
}
}
private int _uploadId;
public int uploadId {
get {
this.LoadIfNotLoaded();
return this._uploadId;
}
}
public Upload upload {
get {
return Upload.LoadById(this.uploadId);
}
}
protected override void doFromHash(Dictionary<string, string> data) {
this._hash = data[TableSpec.FIELD_HASH];
this._text = data[TableSpec.FIELD_TEXT];
this._uploadId = int.Parse(data[TableSpec.FIELD_UPLOADID]);
}
public XElement exportToXml(UserContext context) {
return new XElement("texImage",
new XElement("id", this.id),
new XElement("hash", this.hash),
new XElement("text", this.text),
this.upload.exportToXml(context)
);
}
public static TexImage Save(string text) {
string hash = Util.md5(text);
try {
return TexImage.LoadById(
int.Parse(
Config.instance.mainConnection.LoadIdByField(
TableSpec.instance.getColumnSpec(TableSpec.FIELD_HASH),
hash
)
)
);
} catch(NotFoundInDBException) {
}
User uploader = User.LoadByName("Mr. TeX compiler");
Upload file = UploadManager.SafeUploadFile(Compiler.GetPngStream(text), "tex-" + hash + ".png", uploader);
InsertOrUpdateChange change = new InsertOrUpdateChange(
TableSpec.instance,
new Dictionary<string,AbstractFieldValue> {
{ TableSpec.FIELD_HASH, new ScalarFieldValue(hash) },
{ TableSpec.FIELD_TEXT, new ScalarFieldValue(text) },
{ TableSpec.FIELD_UPLOADID, new ScalarFieldValue(file.id.ToString()) },
},
new Dictionary<string,AbstractFieldValue>(),
new ComparisonCondition(
TableSpec.instance.getColumnSpec(TableSpec.FIELD_HASH),
ComparisonType.EQUAL,
hash
)
);
ChangeSetUtil.ApplyChanges(change);
return TexImage.LoadById(change.getId().Value);
}
}
}