1 files changed, 2 insertions, 24 deletions
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/interpreter/Environment.java b/src/main/java/pl/edu/mimuw/cloudatlas/interpreter/Environment.java
index d45b600..dd94631 100644
--- a/src/main/java/pl/edu/mimuw/cloudatlas/interpreter/Environment.java
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/interpreter/Environment.java
@@ -24,28 +24,6 @@
 
 package pl.edu.mimuw.cloudatlas.interpreter;
 
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import pl.edu.mimuw.cloudatlas.model.ValueNull;
-
-class Environment {
-	private final TableRow row;
-	private final Map<String, Integer> columns = new HashMap<String, Integer>();
-
-	public Environment(TableRow row, List<String> columns) {
-		this.row = row;
-		int i = 0;
-		for(String c : columns)
-			this.columns.put(c, i++);
-	}
-
-	public Result getIdent(String ident) {
-		try {
-			return new ResultSingle(row.getIth(columns.get(ident)));
-		} catch(NullPointerException exception) {
-			return new ResultSingle(ValueNull.getInstance());
-		}
-	}
+abstract class Environment {
+	abstract public Result getIdent(String ident);
 }