1 package org.apache.lucene.queryParser.core.nodes;
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21 * A query node implements {@link FieldableNode} interface to indicate that its
22 * children and itself are associated to a specific field.
24 * If it has any children which also implements this interface, it must ensure
25 * the children are associated to the same field.
28 public interface FieldableNode extends QueryNode {
31 * Returns the field associated to the node and every node under it.
33 * @return the field name
35 CharSequence getField();
38 * Associates the node to a field.
43 void setField(CharSequence fieldName);