com.almworks.jira.structure.api.row.TransientRow Maven / Gradle / Ivy

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Public API for the Structure Plugin for JIRA

There is a newer version: 17.25.3

package com.almworks.jira.structure.api.row;

import com.almworks.jira.structure.api.item.ItemIdentity;
import com.atlassian.annotations.Internal;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.function.Function;

@Internal
public class TransientRow implements StructureRow {
  private final StructureRow myDelegate;
  private final long myCreatorId;
  private final long myOriginalId;

  public TransientRow(@NotNull StructureRow delegate, long creatorId, long originalId) {
    myDelegate = delegate;
    myCreatorId = creatorId;
    myOriginalId = originalId;
  }

  @Override
  public long getRowId() {
    return myDelegate.getRowId();
  }

  @Override
  @NotNull
  public ItemIdentity getItemId() {
    return myDelegate.getItemId();
  }

  @Override
  public long getSemantics() {
    return myDelegate.getSemantics();
  }

  @Override
  @Nullable
  public  I getItem(@NotNull Class itemClass) {
    return myDelegate.getItem(itemClass);
  }

  public long getCreatorId() {
    return myCreatorId;
  }

  public long getOriginalId() {
    return myOriginalId;
  }

  @Override
  public String toString() {
    return "TransientRow[" + getRowId() + ":" + getItemId() + ":" + getSemantics() + ":" + myCreatorId + ":" + myOriginalId + "]";
  }

  public static long getCreatorId(StructureRow row) {
    return row instanceof TransientRow ? ((TransientRow) row).getCreatorId() : 0;
  }

  public static long getOriginalId(StructureRow row) {
    return row instanceof TransientRow ? ((TransientRow) row).getOriginalId() : 0;
  }

  public static StructureRow getDelegate(StructureRow row) {
    while (row instanceof TransientRow) {
      row = ((TransientRow) row).myDelegate;
    }
    return row;
  }

  /**
   * Replaces delegate in the transient row chain. If replacer function returns the same row or null, no replacement takes place.
   */
  public static StructureRow replaceDelegate(StructureRow row, Function replacer) {
    if (row instanceof TransientRow) {
      TransientRow tr = (TransientRow) row;
      StructureRow delegate = getDelegate(row);
      StructureRow replaced = replacer.apply(delegate);
      return delegate == replaced || replaced == null ? row : new TransientRow(replaced, tr.getCreatorId(), tr.getOriginalId());
    } else {
      StructureRow replaced = replacer.apply(row);
      return replaced == null ? row : replaced;
    }
  }
}