/*
* Copyright 2014 Eediom Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.araqne.logdb.query.expr;
import java.util.ArrayList;
import java.util.List;
import org.araqne.logdb.QueryContext;
import org.araqne.logdb.Row;
import org.araqne.logdb.Strings;
public class Array implements Expression {
private List<Expression> exprs;
private final int count;
public Array(QueryContext ctx, List<Expression> exprs) {
this.exprs = exprs;
this.count = exprs.size();
}
@Override
public Object eval(Row row) {
ArrayList<Object> array = new ArrayList<Object>(count);
for (Expression expr : exprs) {
array.add(expr.eval(row));
}
return array;
}
@Override
public String toString() {
return "array(" + Strings.join(exprs, ", ") + ")";
}
}