on-demand loading of transaction details

[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / model / LedgerTransaction.java

diff --git a/app/src/main/java/net/ktnx/mobileledger/model/LedgerTransaction.java b/app/src/main/java/net/ktnx/mobileledger/model/LedgerTransaction.java
index 8aa169dc05a6893a8d3d2f54be37eef5daa30d89..e51d40038a499b304c938a150d8a3d9b212aa233 100644 (file)
--- a/app/src/main/java/net/ktnx/mobileledger/model/LedgerTransaction.java
+++ b/app/src/main/java/net/ktnx/mobileledger/model/LedgerTransaction.java
@@ -17,6 +17,7 @@
 
 package net.ktnx.mobileledger.model;
 
 
 package net.ktnx.mobileledger.model;
 

+import android.database.Cursor;

 import android.database.sqlite.SQLiteDatabase;
 
 import net.ktnx.mobileledger.utils.Digest;
 import android.database.sqlite.SQLiteDatabase;
 
 import net.ktnx.mobileledger.utils.Digest;


@@ -45,12 +46,14 @@ public class LedgerTransaction {
     private String description;
     private ArrayList<LedgerTransactionItem> items;
     private String dataHash;
     private String description;
     private ArrayList<LedgerTransactionItem> items;
     private String dataHash;

+    private boolean dataLoaded;

     public LedgerTransaction(String id, String date, String description) {
         this.id = id;
         this.date = date;
         this.description = description;
         this.items = new ArrayList<>();
         this.dataHash = null;
     public LedgerTransaction(String id, String date, String description) {
         this.id = id;
         this.date = date;
         this.description = description;
         this.items = new ArrayList<>();
         this.dataHash = null;

+        dataLoaded = false;

     }
     public LedgerTransaction(int id, String date, String description) {
         this(String.valueOf(id), date, description);
     }
     public LedgerTransaction(int id, String date, String description) {
         this(String.valueOf(id), date, description);


@@ -58,6 +61,9 @@ public class LedgerTransaction {
     public LedgerTransaction(String date, String description) {
         this(null, date, description);
     }
     public LedgerTransaction(String date, String description) {
         this(null, date, description);
     }

+    public LedgerTransaction(int id) {
+        this(id, null, null);
+    }

     public void add_item(LedgerTransactionItem item) {
         items.add(item);
         dataHash = null;
     public void add_item(LedgerTransactionItem item) {
         items.add(item);
         dataHash = null;


@@ -128,4 +134,27 @@ public class LedgerTransaction {
                     String.format("Unable to get instance of %s digest", DIGEST_TYPE), e);
         }
     }
                     String.format("Unable to get instance of %s digest", DIGEST_TYPE), e);
         }
     }

+    public void loadData(SQLiteDatabase db) {
+        if (dataLoaded) return;
+
+        try (Cursor cTr = db.rawQuery("SELECT date, description from transactions WHERE " +
+                                         "id=?",new String[]{id})) {
+            if (cTr.moveToFirst()) {
+                date = cTr.getString(0);
+                description = cTr.getString(1);
+
+                try (Cursor cAcc = db.rawQuery("SELECT account_name, amount, currency FROM " +
+                                               "transaction_accounts WHERE transaction_id = ?",
+                        new String[]{id}))
+                {
+                    while (cAcc.moveToNext()) {
+                        add_item(
+                                new LedgerTransactionItem(cAcc.getString(0), cAcc.getFloat(1),
+                                        cAcc.getString(2)));
+                    }
+                }
+            }
+        }
+
+    }

 }
 }