Examples of org.apache.cayenne.exp.parser.ASTDbPath

org.apache.cayenne.exp.parser.ASTDbPath
Path expression traversing DB relationships and attributes. @since 1.1


    StringBuilder validPath = new StringBuilder();


    try {
      for (PathComponent<DbAttribute, DbRelationship> pathComponent : dbEntity
          .resolvePath(new ASTDbPath(path), Collections.emptyMap())) {


        if (validPath.length() > 0) {
          validPath.append(Entity.PATH_SEPARATOR);
        }
        validPath.append(pathComponent.getName());

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        }


        try {
          // add new relationships from path
          Iterator<CayenneMapEntry> it = entity
              .resolvePathComponents(new ASTDbPath(
                  dbRelationshipPath));


          while (it.hasNext()) {
            DbRelationship relationship = (DbRelationship) it
                .next();

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     */
    class DbEntityQualifierTransformer implements Transformer {


        public Object transform(Object input) {
            if (input instanceof ASTObjPath) {
                return new ASTDbPath(((SimpleNode) input).getOperand(0));
            }
            return input;
        }

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    /**
     * A convenience method to create an DB_PATH "equal to" expression.
     */
    public static Expression matchDbExp(String pathSpec, Object value) {
        return new ASTEqual(new ASTDbPath(pathSpec), value);
    }

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    /**
     * A convenience method to create an DB_PATH "not equal to" expression.
     */
    public static Expression noMatchDbExp(String pathSpec, Object value) {
        return new ASTNotEqual(new ASTDbPath(pathSpec), value);
    }

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     * A convenience method to create an DB_PATH "less than" expression.
     * 
     * @since 3.0
     */
    public static Expression lessDbExp(String pathSpec, Object value) {
        return new ASTLess(new ASTDbPath(pathSpec), value);
    }

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     * A convenience method to create an DB_PATH "less than or equal to" expression.
     * 
     * @since 3.0
     */
    public static Expression lessOrEqualDbExp(String pathSpec, Object value) {
        return new ASTLessOrEqual(new ASTDbPath(pathSpec), value);
    }

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     * A convenience method to create an DB_PATH "greater than" expression.
     * 
     * @since 3.0
     */
    public static Expression greaterDbExp(String pathSpec, Object value) {
        return new ASTGreater(new ASTDbPath(pathSpec), value);
    }

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     * A convenience method to create an DB_PATH "greater than or equal to" expression.
     * 
     * @since 3.0
     */
    public static Expression greaterOrEqualDbExp(String pathSpec, Object value) {
        return new ASTGreaterOrEqual(new ASTDbPath(pathSpec), value);
    }

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     */
    public static Expression inDbExp(String pathSpec, Object... values) {
        if (values.length == 0) {
            return new ASTFalse();
        }
        return new ASTIn(new ASTDbPath(pathSpec), new ASTList(values));
    }

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Related Classes of org.apache.cayenne.exp.parser.ASTDbPath

org.apache.cayenne.access.trans.JoinStack$JoinedDbEntityQualifierTransformer

org.apache.cayenne.access.trans.QualifierTranslator$DbEntityQualifierTransformer

org.apache.cayenne.access.trans.SelectTranslator

org.apache.cayenne.access.util.PrefetchHelper

org.apache.cayenne.DataObject

org.apache.cayenne.exp.ExpressionFactory

org.apache.cayenne.map.ObjRelationship

org.apache.cayenne.ObjectId

org.apache.cayenne.Persistent

org.apache.cayenne.query.Ordering

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