5a17acfd70
git-svn-id: http://google-refine.googlecode.com/svn/trunk@1613 7d457c2a-affb-35e4-300a-418c747d4874
87 lines
3.5 KiB
Java
87 lines
3.5 KiB
Java
/*
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Copyright 2010, Google Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Google Inc. nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.google.refine.expr.functions;
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import java.util.Properties;
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import org.json.JSONException;
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import org.json.JSONWriter;
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import com.google.refine.ProjectManager;
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import com.google.refine.InterProjectModel.ProjectJoin;
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import com.google.refine.expr.EvalError;
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import com.google.refine.expr.WrappedCell;
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import com.google.refine.grel.ControlFunctionRegistry;
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import com.google.refine.grel.Function;
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import com.google.refine.model.Project;
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public class Cross implements Function {
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public Object call(Properties bindings, Object[] args) {
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if (args.length == 3) {
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// from project is implied
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Object wrappedCell = args[0]; // from cell
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Object toProjectName = args[1];
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Object toColumnName = args[2];
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if (wrappedCell != null && wrappedCell instanceof WrappedCell &&
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toProjectName != null && toProjectName instanceof String &&
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toColumnName != null && toColumnName instanceof String) {
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ProjectJoin join = ProjectManager.singleton.getInterProjectModel().getJoin(
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ProjectManager.singleton.getProjectMetadata(
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((Project) bindings.get("project")).id).getName(),
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((WrappedCell) wrappedCell).columnName,
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(String) toProjectName,
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(String) toColumnName
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);
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return join.getRows(((WrappedCell) wrappedCell).cell.value);
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}
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}
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return new EvalError(ControlFunctionRegistry.getFunctionName(this) + " expects a cell, a project name to join with, and a column name in that project");
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}
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public void write(JSONWriter writer, Properties options)
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throws JSONException {
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writer.object();
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writer.key("description"); writer.value("TODO");
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writer.key("params"); writer.value("cell c, string projectName, string columnName");
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writer.key("returns"); writer.value("array");
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writer.endObject();
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}
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}
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