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ALF-10772: schema comparator

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Compares two abstract database schemas.



git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@31312 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Matt Ward
2011-10-18 11:42:57 +00:00
parent 4cde60f0e6
commit 2a5a337b4e
14 changed files with 799 additions and 139 deletions
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49
source/java/org/alfresco/util/schemacomp/SchemaComparator.java
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@@ -18,17 +18,19 @@
*/
package org.alfresco.util.schemacomp;
import org.alfresco.util.schemacomp.model.DbObject;
import org.alfresco.util.schemacomp.model.Schema;
/**
* TODO: comment me!
* Compares two abstract database schemas, a 'left' schema and a 'right' schema. The left schema is the primary
* schema and all objects in the right schema are judged relative to it.
*
* @author Matt Ward
*/
public class SchemaComparator
{
private Schema leftSchema;
private Schema rightSchema;
private final Schema leftSchema;
private final Schema rightSchema;
private final Differences differences = new Differences();
/**
* Construct a comparator to compare schemas left and right.
@@ -42,34 +44,19 @@ public class SchemaComparator
this.rightSchema = right;
}
public void compare()
{
for (DbObject leftObj : leftSchema)
{
DbObject rightObj = rightSchema.get(leftObj.getIdentifier());
if (rightObj != null)
{
// There is an equivalent object in the right hand schema as in the left.
System.out.println("Both schemas have object: " + leftObj.getIdentifier() +
"(" + leftObj.getClass().getSimpleName() + ")");
}
else
{
// No equivalent object in the right hand schema.
System.out.println("No matching object in right schema: " + leftObj.getIdentifier() +
"(" + leftObj.getClass().getSimpleName() + ")");
}
}
// Identify objects in the right schema but not the left
for (DbObject rightObj : rightSchema)
{
if (!leftSchema.contains(rightObj.getIdentifier()))
{
// No equivalent object in the left hand schema.
System.out.println("No matching object in left schema: " + rightObj.getIdentifier() +
"(" + rightObj.getClass().getSimpleName() + ")");
}
}
// Check the left schema against the right schema and record any differences.
leftSchema.diff(rightSchema, differences);
}
/**
* @return the differences
*/
public Differences getDifferences()
{
return this.differences;
}
}